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# interfaces.base

## Module: `interfaces.base`

Inheritance diagram for `nipype.interfaces.base`:

Package contains interfaces for using existing functionality in other packages

Exaples FSL, matlab/SPM , afni

Requires Packages to be installed

## Classes

### `BaseInterface`

class `nipype.interfaces.base.``BaseInterface`(**inputs)

  Bases: `nipype.interfaces.base.Interface`

  Implements common interface functionality.

  `__init__`(**inputs)
  `aggregate_outputs`(runtime=None, needed_outputs=None)

    Collate expected outputs and check for existence

  `always_run`
  `can_resume`
  classmethod `help`(returnhelp=False)

    Prints class help

  `input_spec`

    alias of `BaseInterfaceInputSpec`

  `output_spec` = None
  `run`(**inputs)

    Execute this interface.

    This interface will not raise an exception if runtime.returncode is non-zero.

    Parameters : | inputs : allows the interface settings to be updated
    Returns : | results : an InterfaceResult object containing a copy of the instance that was executed, provenance information and, if successful, results :

  `version`

### `BaseInterfaceInputSpec`

class `nipype.interfaces.base.``BaseInterfaceInputSpec`(**kwargs)

  Bases: `nipype.interfaces.base.TraitedSpec`

  `__init__`(**kwargs)

    Initialize handlers and inputs

  classmethod `add_class_trait`(name, *trait)

    Adds a named trait attribute to this class.

    Parameters : | name : string Name of the attribute to add trait : a trait or a value that can be converted to a trait using Trait() Trait definition of the attribute. It can be a single value or a list equivalent to an argument list for the Trait() function

  `add_trait`(name, *trait)

    Adds a trait attribute to this object.

    Parameters : | name : string Name of the attribute to add trait : trait or a value that can be converted to a trait by Trait() Trait definition for name. If more than one value is specified, it is equivalent to passing the entire list of values to Trait().

  classmethod `add_trait_category`(category)

    Adds a trait category to a class.

  `add_trait_listener`(object, prefix='')
  `all_trait_names`()

    Returns the list of all trait names, including implicitly defined traits.

  `base_trait`(name)

    Returns the base trait definition for a trait attribute.

    Parameters : | name : string Name of the attribute whose trait definition is returned.

  classmethod `class_default_traits_view`()

    Returns the name of the default traits view for the class.

  classmethod `class_editable_traits`()

    Returns an alphabetically sorted list of the names of non-event trait attributes associated with the current class.

  classmethod `class_trait_names`(**metadata)

    Returns a list of the names of all trait attributes whose definitions match the set of metadata criteria specified.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  classmethod `class_trait_view`(name=None, view_element=None)
  classmethod `class_trait_view_elements`()

    Returns the ViewElements object associated with the class.

    The returned object can be used to access all the view elements associated with the class.

  classmethod `class_traits`(**metadata)

    Returns a dictionary containing the definitions of all of the trait attributes of the class that match the set of metadata criteria.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `clone_traits`(traits=None, memo=None, copy=None, **metadata)

    Clones a new object from this one, optionally copying only a specified set of traits.

    Parameters : | traits : list of strings The names of the trait attributes to copy. memo : dictionary A dictionary of objects that have already been copied. copy : None | ‘deep’ | ‘shallow’ The type of copy to perform on any trait that does not have explicit ‘copy’ metadata. A value of None means ‘copy reference’.
    Returns : | The newly cloned object. :

  `configure_traits`(filename=None, view=None, kind=None, edit=True, context=None, handler=None, id='', scrollable=None, **args)

    Creates and displays a dialog box for editing values of trait attributes, as if it were a complete, self-contained GUI application.

    Parameters : | filename : string The name (including path) of a file that contains a pickled representation of the current object. When this parameter is specified, the method reads the corresponding file (if it exists) to restore the saved values of the object’s traits before displaying them. If the user confirms the dialog box (by clicking OK), the new values are written to the file. If this parameter is not specified, the values are loaded from the in-memory object, and are not persisted when the dialog box is closed. view : view or string A View object (or its name) that defines a user interface for editing trait attribute values of the current object. If the view is defined as an attribute on this class, use the name of the attribute. Otherwise, use a reference to the view object. If this attribute is not specified, the View object returned by trait_view() is used. kind : string The type of user interface window to create. See the traitsui.view.kind_trait trait for values and their meanings. If kind is unspecified or None, the kind attribute of the View object is used. edit : Boolean Indicates whether to display a user interface. If filename specifies an existing file, setting edit to False loads the saved values from that file into the object without requiring user interaction. context : object or dictionary A single object or a dictionary of string/object pairs, whose trait attributes are to be edited. If not specified, the current object is used handler : Handler object A handler object used for event handling in the dialog box. If None, the default handler for Traits UI is used. id : string A unique ID for persisting preferences about this user interface, such as size and position. If not specified, no user preferences are saved. scrollable : Boolean Indicates whether the dialog box should be scrollable. When set to True, scroll bars appear on the dialog box if it is not large enough to display all of the items in the view at one time.

  `copy_traits`(other, traits=None, memo=None, copy=None, **metadata)

    Copies another object’s trait attributes into this one.

    Parameters : | other : object The object whose trait attribute values should be copied. traits : list of strings A list of names of trait attributes to copy. If None or unspecified, the set of names returned by trait_names() is used. If ‘all’ or an empty list, the set of names returned by all_trait_names() is used. memo : dictionary A dictionary of objects that have already been copied. copy : None | ‘deep’ | ‘shallow’ The type of copy to perform on any trait that does not have explicit ‘copy’ metadata. A value of None means ‘copy reference’.
    Returns : | A list of attributes that the method was unable to copy, : which is empty if all the attributes were successfully copied. :

  `copyable_trait_names`(**metadata)

    Returns the list of trait names to copy or clone by default.

  `default_traits_view`()

    Returns the name of the default traits view for the object’s class.

  `edit_traits`(view=None, parent=None, kind=None, context=None, handler=None, id='', scrollable=None, **args)

    Displays a user interface window for editing trait attribute values.

    Parameters : | view : view or string A View object (or its name) that defines a user interface for editing trait attribute values of the current object. If the view is defined as an attribute on this class, use the name of the attribute. Otherwise, use a reference to the view object. If this attribute is not specified, the View object returned by trait_view() is used. parent : window handle A user interface component to use as the parent window for the object’s UI window. kind : string The type of user interface window to create. See the traitsui.view.kind_trait trait for values and their meanings. If kind is unspecified or None, the kind attribute of the View object is used. context : object or dictionary A single object or a dictionary of string/object pairs, whose trait attributes are to be edited. If not specified, the current object is used. handler : Handler object A handler object used for event handling in the dialog box. If None, the default handler for Traits UI is used. id : string A unique ID for persisting preferences about this user interface, such as size and position. If not specified, no user preferences are saved. scrollable : Boolean Indicates whether the dialog box should be scrollable. When set to True, scroll bars appear on the dialog box if it is not large enough to display all of the items in the view at one time.

  `editable_traits`()

    Returns an alphabetically sorted list of the names of non-event trait attributes associated with the current object.

  `get`(**kwargs)

    Returns traited class as a dict

    Augments the trait get function to return a dictionary without notification handles

  `get_hashval`(hash_method=None)

    Return a dictionary of our items with hashes for each file.

    Searches through dictionary items and if an item is a file, it calculates the md5 hash of the file contents and stores the file name and hash value as the new key value.

    However, the overall bunch hash is calculated only on the hash value of a file. The path and name of the file are not used in the overall hash calculation.

    Returns : | dict_withhash : dict Copy of our dictionary with the new file hashes included with each file. hashvalue : str The md5 hash value of the traited spec

  `get_traitsfree`(**kwargs)

    Returns traited class as a dict

    Augments the trait get function to return a dictionary without any traits. The dictionary does not contain any attributes that were Undefined

  `has_traits_interface`(*interfaces)

    Returns whether the object implements a specified traits interface.

    Parameters : | interfaces : one or more traits Interface (sub)classes.

  `items`()

    Name, trait generator for user modifiable traits

  `on_trait_change`(handler, name=None, remove=False, dispatch='same', priority=False, deferred=False, target=None)

    Causes the object to invoke a handler whenever a trait attribute matching a specified pattern is modified, or removes the association.

    Parameters : | handler : function A trait notification function for the name trait attribute, with one of the signatures described below. name : string The name of the trait attribute whose value changes trigger the notification. The name can specify complex patterns of trait changes using an extended name syntax, which is described below. remove : Boolean If True, removes the previously-set association between handler and name; if False (the default), creates the association. dispatch : string A string indicating the thread on which notifications must be run. Possible values are: ‘same’: Run notifications on the same thread as this one. ‘ui’: Run notifications on the UI thread, and allow them to be queued and deferred. ‘fast_ui’: Run notifications on the UI thread, and process them immediately. ‘new’: Run notifications in a new thread.

  `on_trait_event`(handler, name=None, remove=False, dispatch='same', priority=False, deferred=False, target=None)

    Causes the object to invoke a handler whenever a trait attribute matching a specified pattern is modified, or removes the association.

    Parameters : | handler : function A trait notification function for the name trait attribute, with one of the signatures described below. name : string The name of the trait attribute whose value changes trigger the notification. The name can specify complex patterns of trait changes using an extended name syntax, which is described below. remove : Boolean If True, removes the previously-set association between handler and name; if False (the default), creates the association. dispatch : string A string indicating the thread on which notifications must be run. Possible values are: ‘same’: Run notifications on the same thread as this one. ‘ui’: Run notifications on the UI thread, and allow them to be queued and deferred. ‘fast_ui’: Run notifications on the UI thread, and process them immediately. ‘new’: Run notifications in a new thread.

  `print_traits`(show_help=False, **metadata)

    Prints the values of all explicitly-defined, non-event trait attributes on the current object, in an easily readable format.

    Parameters : | show_help : Boolean Indicates whether to display additional descriptive information.

  `remove_trait`(name)

    Removes a trait attribute from this object.

    Parameters : | name : string Name of the attribute to remove

  `remove_trait_listener`(object, prefix='')
  `reset_traits`(traits=None, **metadata)

    Resets some or all of an object’s trait attributes to their default values.

    Parameters : | traits : list of strings Names of trait attributes to reset
    Returns : | A list of attributes that the method was unable to reset, which is empty : if all the attributes were successfully reset. :

  `set`(trait_change_notify=True, **traits)

    Shortcut for setting object trait attributes.

    Parameters : | trait_change_notify : Boolean If True (the default), then each value assigned may generate a trait change notification. If False, then no trait change notifications will be generated. (see also: trait_setq) traits : list of key/value pairs Trait attributes and their values to be set
    Returns : | self : The method returns this object, after setting attributes.

  classmethod `set_trait_dispatch_handler`(name, klass, override=False)

    Sets a trait notification dispatch handler.

  `sync_trait`(trait_name, object, alias=None, mutual=True, remove=False)

    Synchronizes the value of a trait attribute on this object with a trait attribute on another object.

    Parameters : | name : string Name of the trait attribute on this object object : object The object with which to synchronize alias : string Name of the trait attribute on other; if None or omitted, same as name. mutual : Boolean or integer Indicates whether synchronization is mutual (True or non-zero) or one-way (False or zero) remove : Boolean or integer Indicates whether sychronization is being added (False or zero) or removed (True or non-zero)

  `trait`(name, force=False, copy=False)

    Returns the trait definition for the name trait attribute.

    Parameters : | name : string Name of the attribute whose trait definition is to be returned force : Boolean Indicates whether to return a trait definition if name is not explicitly defined copy : Boolean Indicates whether to return the original trait definition or a copy

  `trait_context`()

    Returns the default context to use for editing or configuring traits.

  `trait_get`(*names, **metadata)

    Shortcut for getting object trait attributes.

    Parameters : | names : list of trait attribute names Trait attributes whose values are requested
    Returns : | A dictionary whose keys are the names passed as arguments and whose : values are the corresponding trait values :

  `trait_items_event`(event_trait, name, items_event)
  classmethod `trait_monitor`(handler, remove=False)

    Adds or removes the specified handler from the list of active monitors.

    Parameters : | handler : function The function to add or remove as a monitor. remove : boolean Flag indicating whether to remove (True) or add the specified handler as a monitor for this class.

  `trait_names`(**metadata)

    Returns a list of the names of all trait attributes whose definitions match the set of metadata criteria specified.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `trait_property_changed`(name, old_value[, new_value])
  `trait_set`(trait_change_notify=True, **traits)

    Shortcut for setting object trait attributes.

    Parameters : | trait_change_notify : Boolean If True (the default), then each value assigned may generate a trait change notification. If False, then no trait change notifications will be generated. (see also: trait_setq) traits : list of key/value pairs Trait attributes and their values to be set
    Returns : | self : The method returns this object, after setting attributes.

  `trait_setq`(**traits)

    Shortcut for setting object trait attributes.

    Parameters : | traits : list of key/value pairs Trait attributes and their values to be set. No trait change notifications will be generated for any values assigned (see also: trait_set).
    Returns : | self : The method returns this object, after setting attributes.

  classmethod `trait_subclasses`(all=False)

    Returns a list of the immediate (or all) subclasses of this class.

    Parameters : | all : Boolean Indicates whether to return all subclasses of this class. If False, only immediate subclasses are returned.

  `trait_view`(name=None, view_element=None)

    Gets or sets a ViewElement associated with an object’s class.

    Parameters : | name : string Name of a view element view_element : a ViewElement object View element to associate
    Returns : | A view element. :

  `trait_view_elements`()

    Returns the ViewElements object associated with the object’s class.

    The returned object can be used to access all the view elements associated with the class.

  `trait_views`(klass=None)

    Returns a list of the names of all view elements associated with the current object’s class.

    Parameters : | klass : a class A class, such that all returned names must correspond to instances of this class. Possible values include: Group Item View ViewElement ViewSubElement

  `traits`(**metadata)

    Returns a dictionary containing the definitions of all of the trait attributes of this object that match the set of metadata criteria.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `traits_init`()
  `traits_inited`([True])
  `validate_trait`(name, value)

    Validates whether a value is legal for a trait.

    Returns the validated value if it is valid.

  `wrappers` = {'new': <class traits.trait_notifiers.NewTraitChangeNotifyWrapper at 0x37947a0>, 'ui': <class traits.trait_notifiers.FastUITraitChangeNotifyWrapper at 0x37946d0>, 'extended': <class traits.trait_notifiers.ExtendedTraitChangeNotifyWrapper at 0x3794668>, 'fast_ui': <class traits.trait_notifiers.FastUITraitChangeNotifyWrapper at 0x37946d0>, 'same': <class traits.trait_notifiers.TraitChangeNotifyWrapper at 0x3794600>}

### `BaseTraitedSpec`

class `nipype.interfaces.base.``BaseTraitedSpec`(**kwargs)

  Bases: `traits.has_traits.HasTraits`

  Provide a few methods necessary to support nipype interface api

  The inputs attribute of interfaces call certain methods that are not available in traits.HasTraits. These are provided here.

  new metadata:

  - usedefault : set this to True if the default value of the trait should be used. Unless this is set, the attributes are set to traits.Undefined

  new attribute:

  - get_hashval : returns a tuple containing the state of the trait as a dict and hashvalue corresponding to dict.

  XXX Reconsider this in the long run, but it seems like the best solution to move forward on the refactoring.

  `__init__`(**kwargs)

    Initialize handlers and inputs

  classmethod `add_class_trait`(name, *trait)

    Adds a named trait attribute to this class.

    Parameters : | name : string Name of the attribute to add trait : a trait or a value that can be converted to a trait using Trait() Trait definition of the attribute. It can be a single value or a list equivalent to an argument list for the Trait() function

  `add_trait`(name, *trait)

    Adds a trait attribute to this object.

    Parameters : | name : string Name of the attribute to add trait : trait or a value that can be converted to a trait by Trait() Trait definition for name. If more than one value is specified, it is equivalent to passing the entire list of values to Trait().

  classmethod `add_trait_category`(category)

    Adds a trait category to a class.

  `add_trait_listener`(object, prefix='')
  `all_trait_names`()

    Returns the list of all trait names, including implicitly defined traits.

  `base_trait`(name)

    Returns the base trait definition for a trait attribute.

    Parameters : | name : string Name of the attribute whose trait definition is returned.

  classmethod `class_default_traits_view`()

    Returns the name of the default traits view for the class.

  classmethod `class_editable_traits`()

    Returns an alphabetically sorted list of the names of non-event trait attributes associated with the current class.

  classmethod `class_trait_names`(**metadata)

    Returns a list of the names of all trait attributes whose definitions match the set of metadata criteria specified.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  classmethod `class_trait_view`(name=None, view_element=None)
  classmethod `class_trait_view_elements`()

    Returns the ViewElements object associated with the class.

    The returned object can be used to access all the view elements associated with the class.

  classmethod `class_traits`(**metadata)

    Returns a dictionary containing the definitions of all of the trait attributes of the class that match the set of metadata criteria.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `clone_traits`(traits=None, memo=None, copy=None, **metadata)

    Clones a new object from this one, optionally copying only a specified set of traits.

    Parameters : | traits : list of strings The names of the trait attributes to copy. memo : dictionary A dictionary of objects that have already been copied. copy : None | ‘deep’ | ‘shallow’ The type of copy to perform on any trait that does not have explicit ‘copy’ metadata. A value of None means ‘copy reference’.
    Returns : | The newly cloned object. :

  `configure_traits`(filename=None, view=None, kind=None, edit=True, context=None, handler=None, id='', scrollable=None, **args)

    Creates and displays a dialog box for editing values of trait attributes, as if it were a complete, self-contained GUI application.

    Parameters : | filename : string The name (including path) of a file that contains a pickled representation of the current object. When this parameter is specified, the method reads the corresponding file (if it exists) to restore the saved values of the object’s traits before displaying them. If the user confirms the dialog box (by clicking OK), the new values are written to the file. If this parameter is not specified, the values are loaded from the in-memory object, and are not persisted when the dialog box is closed. view : view or string A View object (or its name) that defines a user interface for editing trait attribute values of the current object. If the view is defined as an attribute on this class, use the name of the attribute. Otherwise, use a reference to the view object. If this attribute is not specified, the View object returned by trait_view() is used. kind : string The type of user interface window to create. See the traitsui.view.kind_trait trait for values and their meanings. If kind is unspecified or None, the kind attribute of the View object is used. edit : Boolean Indicates whether to display a user interface. If filename specifies an existing file, setting edit to False loads the saved values from that file into the object without requiring user interaction. context : object or dictionary A single object or a dictionary of string/object pairs, whose trait attributes are to be edited. If not specified, the current object is used handler : Handler object A handler object used for event handling in the dialog box. If None, the default handler for Traits UI is used. id : string A unique ID for persisting preferences about this user interface, such as size and position. If not specified, no user preferences are saved. scrollable : Boolean Indicates whether the dialog box should be scrollable. When set to True, scroll bars appear on the dialog box if it is not large enough to display all of the items in the view at one time.

  `copy_traits`(other, traits=None, memo=None, copy=None, **metadata)

    Copies another object’s trait attributes into this one.

    Parameters : | other : object The object whose trait attribute values should be copied. traits : list of strings A list of names of trait attributes to copy. If None or unspecified, the set of names returned by trait_names() is used. If ‘all’ or an empty list, the set of names returned by all_trait_names() is used. memo : dictionary A dictionary of objects that have already been copied. copy : None | ‘deep’ | ‘shallow’ The type of copy to perform on any trait that does not have explicit ‘copy’ metadata. A value of None means ‘copy reference’.
    Returns : | A list of attributes that the method was unable to copy, : which is empty if all the attributes were successfully copied. :

  `copyable_trait_names`(**metadata)

    Returns the list of trait names to copy or clone by default.

  `default_traits_view`()

    Returns the name of the default traits view for the object’s class.

  `edit_traits`(view=None, parent=None, kind=None, context=None, handler=None, id='', scrollable=None, **args)

    Displays a user interface window for editing trait attribute values.

    Parameters : | view : view or string A View object (or its name) that defines a user interface for editing trait attribute values of the current object. If the view is defined as an attribute on this class, use the name of the attribute. Otherwise, use a reference to the view object. If this attribute is not specified, the View object returned by trait_view() is used. parent : window handle A user interface component to use as the parent window for the object’s UI window. kind : string The type of user interface window to create. See the traitsui.view.kind_trait trait for values and their meanings. If kind is unspecified or None, the kind attribute of the View object is used. context : object or dictionary A single object or a dictionary of string/object pairs, whose trait attributes are to be edited. If not specified, the current object is used. handler : Handler object A handler object used for event handling in the dialog box. If None, the default handler for Traits UI is used. id : string A unique ID for persisting preferences about this user interface, such as size and position. If not specified, no user preferences are saved. scrollable : Boolean Indicates whether the dialog box should be scrollable. When set to True, scroll bars appear on the dialog box if it is not large enough to display all of the items in the view at one time.

  `editable_traits`()

    Returns an alphabetically sorted list of the names of non-event trait attributes associated with the current object.

  `get`(**kwargs)

    Returns traited class as a dict

    Augments the trait get function to return a dictionary without notification handles

  `get_hashval`(hash_method=None)

    Return a dictionary of our items with hashes for each file.

    Searches through dictionary items and if an item is a file, it calculates the md5 hash of the file contents and stores the file name and hash value as the new key value.

    However, the overall bunch hash is calculated only on the hash value of a file. The path and name of the file are not used in the overall hash calculation.

    Returns : | dict_withhash : dict Copy of our dictionary with the new file hashes included with each file. hashvalue : str The md5 hash value of the traited spec

  `get_traitsfree`(**kwargs)

    Returns traited class as a dict

    Augments the trait get function to return a dictionary without any traits. The dictionary does not contain any attributes that were Undefined

  `has_traits_interface`(*interfaces)

    Returns whether the object implements a specified traits interface.

    Parameters : | interfaces : one or more traits Interface (sub)classes.

  `items`()

    Name, trait generator for user modifiable traits

  `on_trait_change`(handler, name=None, remove=False, dispatch='same', priority=False, deferred=False, target=None)

    Causes the object to invoke a handler whenever a trait attribute matching a specified pattern is modified, or removes the association.

    Parameters : | handler : function A trait notification function for the name trait attribute, with one of the signatures described below. name : string The name of the trait attribute whose value changes trigger the notification. The name can specify complex patterns of trait changes using an extended name syntax, which is described below. remove : Boolean If True, removes the previously-set association between handler and name; if False (the default), creates the association. dispatch : string A string indicating the thread on which notifications must be run. Possible values are: ‘same’: Run notifications on the same thread as this one. ‘ui’: Run notifications on the UI thread, and allow them to be queued and deferred. ‘fast_ui’: Run notifications on the UI thread, and process them immediately. ‘new’: Run notifications in a new thread.

  `on_trait_event`(handler, name=None, remove=False, dispatch='same', priority=False, deferred=False, target=None)

    Causes the object to invoke a handler whenever a trait attribute matching a specified pattern is modified, or removes the association.

    Parameters : | handler : function A trait notification function for the name trait attribute, with one of the signatures described below. name : string The name of the trait attribute whose value changes trigger the notification. The name can specify complex patterns of trait changes using an extended name syntax, which is described below. remove : Boolean If True, removes the previously-set association between handler and name; if False (the default), creates the association. dispatch : string A string indicating the thread on which notifications must be run. Possible values are: ‘same’: Run notifications on the same thread as this one. ‘ui’: Run notifications on the UI thread, and allow them to be queued and deferred. ‘fast_ui’: Run notifications on the UI thread, and process them immediately. ‘new’: Run notifications in a new thread.

  `print_traits`(show_help=False, **metadata)

    Prints the values of all explicitly-defined, non-event trait attributes on the current object, in an easily readable format.

    Parameters : | show_help : Boolean Indicates whether to display additional descriptive information.

  `remove_trait`(name)

    Removes a trait attribute from this object.

    Parameters : | name : string Name of the attribute to remove

  `remove_trait_listener`(object, prefix='')
  `reset_traits`(traits=None, **metadata)

    Resets some or all of an object’s trait attributes to their default values.

    Parameters : | traits : list of strings Names of trait attributes to reset
    Returns : | A list of attributes that the method was unable to reset, which is empty : if all the attributes were successfully reset. :

  `set`(trait_change_notify=True, **traits)

    Shortcut for setting object trait attributes.

    Parameters : | trait_change_notify : Boolean If True (the default), then each value assigned may generate a trait change notification. If False, then no trait change notifications will be generated. (see also: trait_setq) traits : list of key/value pairs Trait attributes and their values to be set
    Returns : | self : The method returns this object, after setting attributes.

  classmethod `set_trait_dispatch_handler`(name, klass, override=False)

    Sets a trait notification dispatch handler.

  `sync_trait`(trait_name, object, alias=None, mutual=True, remove=False)

    Synchronizes the value of a trait attribute on this object with a trait attribute on another object.

    Parameters : | name : string Name of the trait attribute on this object object : object The object with which to synchronize alias : string Name of the trait attribute on other; if None or omitted, same as name. mutual : Boolean or integer Indicates whether synchronization is mutual (True or non-zero) or one-way (False or zero) remove : Boolean or integer Indicates whether sychronization is being added (False or zero) or removed (True or non-zero)

  `trait`(name, force=False, copy=False)

    Returns the trait definition for the name trait attribute.

    Parameters : | name : string Name of the attribute whose trait definition is to be returned force : Boolean Indicates whether to return a trait definition if name is not explicitly defined copy : Boolean Indicates whether to return the original trait definition or a copy

  `trait_context`()

    Returns the default context to use for editing or configuring traits.

  `trait_get`(*names, **metadata)

    Shortcut for getting object trait attributes.

    Parameters : | names : list of trait attribute names Trait attributes whose values are requested
    Returns : | A dictionary whose keys are the names passed as arguments and whose : values are the corresponding trait values :

  `trait_items_event`(event_trait, name, items_event)
  classmethod `trait_monitor`(handler, remove=False)

    Adds or removes the specified handler from the list of active monitors.

    Parameters : | handler : function The function to add or remove as a monitor. remove : boolean Flag indicating whether to remove (True) or add the specified handler as a monitor for this class.

  `trait_names`(**metadata)

    Returns a list of the names of all trait attributes whose definitions match the set of metadata criteria specified.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `trait_property_changed`(name, old_value[, new_value])
  `trait_set`(trait_change_notify=True, **traits)

    Shortcut for setting object trait attributes.

    Parameters : | trait_change_notify : Boolean If True (the default), then each value assigned may generate a trait change notification. If False, then no trait change notifications will be generated. (see also: trait_setq) traits : list of key/value pairs Trait attributes and their values to be set
    Returns : | self : The method returns this object, after setting attributes.

  `trait_setq`(**traits)

    Shortcut for setting object trait attributes.

    Parameters : | traits : list of key/value pairs Trait attributes and their values to be set. No trait change notifications will be generated for any values assigned (see also: trait_set).
    Returns : | self : The method returns this object, after setting attributes.

  classmethod `trait_subclasses`(all=False)

    Returns a list of the immediate (or all) subclasses of this class.

    Parameters : | all : Boolean Indicates whether to return all subclasses of this class. If False, only immediate subclasses are returned.

  `trait_view`(name=None, view_element=None)

    Gets or sets a ViewElement associated with an object’s class.

    Parameters : | name : string Name of a view element view_element : a ViewElement object View element to associate
    Returns : | A view element. :

  `trait_view_elements`()

    Returns the ViewElements object associated with the object’s class.

    The returned object can be used to access all the view elements associated with the class.

  `trait_views`(klass=None)

    Returns a list of the names of all view elements associated with the current object’s class.

    Parameters : | klass : a class A class, such that all returned names must correspond to instances of this class. Possible values include: Group Item View ViewElement ViewSubElement

  `traits`(**metadata)

    Returns a dictionary containing the definitions of all of the trait attributes of this object that match the set of metadata criteria.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `traits_init`()
  `traits_inited`([True])
  `validate_trait`(name, value)

    Validates whether a value is legal for a trait.

    Returns the validated value if it is valid.

  `wrappers` = {'new': <class traits.trait_notifiers.NewTraitChangeNotifyWrapper at 0x37947a0>, 'ui': <class traits.trait_notifiers.FastUITraitChangeNotifyWrapper at 0x37946d0>, 'extended': <class traits.trait_notifiers.ExtendedTraitChangeNotifyWrapper at 0x3794668>, 'fast_ui': <class traits.trait_notifiers.FastUITraitChangeNotifyWrapper at 0x37946d0>, 'same': <class traits.trait_notifiers.TraitChangeNotifyWrapper at 0x3794600>}

### `Bunch`

class `nipype.interfaces.base.``Bunch`(*args, **kwargs)

  Bases: `object`

  Dictionary-like class that provides attribute-style access to it’s items.

  A Bunch is a simple container that stores it’s items as class attributes. Internally all items are stored in a dictionary and the class exposes several of the dictionary methods.

  Notes

  The Bunch pattern came from the Python Cookbook:

  [1] | A. Martelli, D. Hudgeon, “Collecting a Bunch of Named Items”, Python Cookbook, 2nd Ed, Chapter 4.18, 2005.

  Examples

      >>> from nipype.interfaces.base import Bunch
      >>> inputs = Bunch(infile='subj.nii', fwhm=6.0, register_to_mean=True)
      >>> inputs
      Bunch(fwhm=6.0, infile='subj.nii', register_to_mean=True)
      >>> inputs.register_to_mean = False
      >>> inputs
      Bunch(fwhm=6.0, infile='subj.nii', register_to_mean=False)

  `__init__`(*args, **kwargs)
  `dictcopy`()

    returns a deep copy of existing Bunch as a dictionary

  `get`(*args)

    Support dictionary get() functionality

  `items`()

    iterates over bunch attributes as key, value pairs

  `iteritems`()

    iterates over bunch attributes as key, value pairs

  `set`(**kwargs)

    Support dictionary get() functionality

  `update`(*args, **kwargs)

    update existing attribute, or create new attribute

    Note: update is very much like HasTraits.set

### `CommandLine`

class `nipype.interfaces.base.``CommandLine`(command=None, **inputs)

  Bases: `nipype.interfaces.base.BaseInterface`

  Implements functionality to interact with command line programs class must be instantiated with a command argument

  Parameters : | command : string define base immutable command you wish to run args : string, optional optional arguments passed to base command

  Examples

      >>> from nipype.interfaces.base import CommandLine
      >>> cli = CommandLine(command='ls', environ={'DISPLAY': ':1'})
      >>> cli.inputs.args = '-al'
      >>> cli.cmdline
      'ls -al'

      >>> cli.inputs.trait_get()
      {'ignore_exception': False, 'args': '-al', 'environ': {'DISPLAY': ':1'}}

      >>> cli.inputs.get_hashval()
      ({'args': '-al'}, 'a2f45e04a34630c5f33a75ea2a533cdd')

  `__init__`(command=None, **inputs)
  `aggregate_outputs`(runtime=None, needed_outputs=None)

    Collate expected outputs and check for existence

  `always_run`
  `can_resume`
  `cmd`

    sets base command, immutable

  `cmdline`

    command plus any arguments (args) validates arguments and generates command line

  classmethod `help`(returnhelp=False)
  `input_spec`

    alias of `CommandLineInputSpec`

  `output_spec` = None
  `raise_exception`(runtime)
  `run`(**inputs)

    Execute this interface.

    This interface will not raise an exception if runtime.returncode is non-zero.

    Parameters : | inputs : allows the interface settings to be updated
    Returns : | results : an InterfaceResult object containing a copy of the instance that was executed, provenance information and, if successful, results :

  `version`
  `version_from_command`(flag='-v')

### `CommandLineInputSpec`

class `nipype.interfaces.base.``CommandLineInputSpec`(**kwargs)

  Bases: `nipype.interfaces.base.BaseInterfaceInputSpec`

  `__init__`(**kwargs)

    Initialize handlers and inputs

  classmethod `add_class_trait`(name, *trait)

    Adds a named trait attribute to this class.

    Parameters : | name : string Name of the attribute to add trait : a trait or a value that can be converted to a trait using Trait() Trait definition of the attribute. It can be a single value or a list equivalent to an argument list for the Trait() function

  `add_trait`(name, *trait)

    Adds a trait attribute to this object.

    Parameters : | name : string Name of the attribute to add trait : trait or a value that can be converted to a trait by Trait() Trait definition for name. If more than one value is specified, it is equivalent to passing the entire list of values to Trait().

  classmethod `add_trait_category`(category)

    Adds a trait category to a class.

  `add_trait_listener`(object, prefix='')
  `all_trait_names`()

    Returns the list of all trait names, including implicitly defined traits.

  `base_trait`(name)

    Returns the base trait definition for a trait attribute.

    Parameters : | name : string Name of the attribute whose trait definition is returned.

  classmethod `class_default_traits_view`()

    Returns the name of the default traits view for the class.

  classmethod `class_editable_traits`()

    Returns an alphabetically sorted list of the names of non-event trait attributes associated with the current class.

  classmethod `class_trait_names`(**metadata)

    Returns a list of the names of all trait attributes whose definitions match the set of metadata criteria specified.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  classmethod `class_trait_view`(name=None, view_element=None)
  classmethod `class_trait_view_elements`()

    Returns the ViewElements object associated with the class.

    The returned object can be used to access all the view elements associated with the class.

  classmethod `class_traits`(**metadata)

    Returns a dictionary containing the definitions of all of the trait attributes of the class that match the set of metadata criteria.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `clone_traits`(traits=None, memo=None, copy=None, **metadata)

    Clones a new object from this one, optionally copying only a specified set of traits.

    Parameters : | traits : list of strings The names of the trait attributes to copy. memo : dictionary A dictionary of objects that have already been copied. copy : None | ‘deep’ | ‘shallow’ The type of copy to perform on any trait that does not have explicit ‘copy’ metadata. A value of None means ‘copy reference’.
    Returns : | The newly cloned object. :

  `configure_traits`(filename=None, view=None, kind=None, edit=True, context=None, handler=None, id='', scrollable=None, **args)

    Creates and displays a dialog box for editing values of trait attributes, as if it were a complete, self-contained GUI application.

    Parameters : | filename : string The name (including path) of a file that contains a pickled representation of the current object. When this parameter is specified, the method reads the corresponding file (if it exists) to restore the saved values of the object’s traits before displaying them. If the user confirms the dialog box (by clicking OK), the new values are written to the file. If this parameter is not specified, the values are loaded from the in-memory object, and are not persisted when the dialog box is closed. view : view or string A View object (or its name) that defines a user interface for editing trait attribute values of the current object. If the view is defined as an attribute on this class, use the name of the attribute. Otherwise, use a reference to the view object. If this attribute is not specified, the View object returned by trait_view() is used. kind : string The type of user interface window to create. See the traitsui.view.kind_trait trait for values and their meanings. If kind is unspecified or None, the kind attribute of the View object is used. edit : Boolean Indicates whether to display a user interface. If filename specifies an existing file, setting edit to False loads the saved values from that file into the object without requiring user interaction. context : object or dictionary A single object or a dictionary of string/object pairs, whose trait attributes are to be edited. If not specified, the current object is used handler : Handler object A handler object used for event handling in the dialog box. If None, the default handler for Traits UI is used. id : string A unique ID for persisting preferences about this user interface, such as size and position. If not specified, no user preferences are saved. scrollable : Boolean Indicates whether the dialog box should be scrollable. When set to True, scroll bars appear on the dialog box if it is not large enough to display all of the items in the view at one time.

  `copy_traits`(other, traits=None, memo=None, copy=None, **metadata)

    Copies another object’s trait attributes into this one.

    Parameters : | other : object The object whose trait attribute values should be copied. traits : list of strings A list of names of trait attributes to copy. If None or unspecified, the set of names returned by trait_names() is used. If ‘all’ or an empty list, the set of names returned by all_trait_names() is used. memo : dictionary A dictionary of objects that have already been copied. copy : None | ‘deep’ | ‘shallow’ The type of copy to perform on any trait that does not have explicit ‘copy’ metadata. A value of None means ‘copy reference’.
    Returns : | A list of attributes that the method was unable to copy, : which is empty if all the attributes were successfully copied. :

  `copyable_trait_names`(**metadata)

    Returns the list of trait names to copy or clone by default.

  `default_traits_view`()

    Returns the name of the default traits view for the object’s class.

  `edit_traits`(view=None, parent=None, kind=None, context=None, handler=None, id='', scrollable=None, **args)

    Displays a user interface window for editing trait attribute values.

    Parameters : | view : view or string A View object (or its name) that defines a user interface for editing trait attribute values of the current object. If the view is defined as an attribute on this class, use the name of the attribute. Otherwise, use a reference to the view object. If this attribute is not specified, the View object returned by trait_view() is used. parent : window handle A user interface component to use as the parent window for the object’s UI window. kind : string The type of user interface window to create. See the traitsui.view.kind_trait trait for values and their meanings. If kind is unspecified or None, the kind attribute of the View object is used. context : object or dictionary A single object or a dictionary of string/object pairs, whose trait attributes are to be edited. If not specified, the current object is used. handler : Handler object A handler object used for event handling in the dialog box. If None, the default handler for Traits UI is used. id : string A unique ID for persisting preferences about this user interface, such as size and position. If not specified, no user preferences are saved. scrollable : Boolean Indicates whether the dialog box should be scrollable. When set to True, scroll bars appear on the dialog box if it is not large enough to display all of the items in the view at one time.

  `editable_traits`()

    Returns an alphabetically sorted list of the names of non-event trait attributes associated with the current object.

  `get`(**kwargs)

    Returns traited class as a dict

    Augments the trait get function to return a dictionary without notification handles

  `get_hashval`(hash_method=None)

    Return a dictionary of our items with hashes for each file.

    Searches through dictionary items and if an item is a file, it calculates the md5 hash of the file contents and stores the file name and hash value as the new key value.

    However, the overall bunch hash is calculated only on the hash value of a file. The path and name of the file are not used in the overall hash calculation.

    Returns : | dict_withhash : dict Copy of our dictionary with the new file hashes included with each file. hashvalue : str The md5 hash value of the traited spec

  `get_traitsfree`(**kwargs)

    Returns traited class as a dict

    Augments the trait get function to return a dictionary without any traits. The dictionary does not contain any attributes that were Undefined

  `has_traits_interface`(*interfaces)

    Returns whether the object implements a specified traits interface.

    Parameters : | interfaces : one or more traits Interface (sub)classes.

  `items`()

    Name, trait generator for user modifiable traits

  `on_trait_change`(handler, name=None, remove=False, dispatch='same', priority=False, deferred=False, target=None)

    Causes the object to invoke a handler whenever a trait attribute matching a specified pattern is modified, or removes the association.

    Parameters : | handler : function A trait notification function for the name trait attribute, with one of the signatures described below. name : string The name of the trait attribute whose value changes trigger the notification. The name can specify complex patterns of trait changes using an extended name syntax, which is described below. remove : Boolean If True, removes the previously-set association between handler and name; if False (the default), creates the association. dispatch : string A string indicating the thread on which notifications must be run. Possible values are: ‘same’: Run notifications on the same thread as this one. ‘ui’: Run notifications on the UI thread, and allow them to be queued and deferred. ‘fast_ui’: Run notifications on the UI thread, and process them immediately. ‘new’: Run notifications in a new thread.

  `on_trait_event`(handler, name=None, remove=False, dispatch='same', priority=False, deferred=False, target=None)

    Causes the object to invoke a handler whenever a trait attribute matching a specified pattern is modified, or removes the association.

    Parameters : | handler : function A trait notification function for the name trait attribute, with one of the signatures described below. name : string The name of the trait attribute whose value changes trigger the notification. The name can specify complex patterns of trait changes using an extended name syntax, which is described below. remove : Boolean If True, removes the previously-set association between handler and name; if False (the default), creates the association. dispatch : string A string indicating the thread on which notifications must be run. Possible values are: ‘same’: Run notifications on the same thread as this one. ‘ui’: Run notifications on the UI thread, and allow them to be queued and deferred. ‘fast_ui’: Run notifications on the UI thread, and process them immediately. ‘new’: Run notifications in a new thread.

  `print_traits`(show_help=False, **metadata)

    Prints the values of all explicitly-defined, non-event trait attributes on the current object, in an easily readable format.

    Parameters : | show_help : Boolean Indicates whether to display additional descriptive information.

  `remove_trait`(name)

    Removes a trait attribute from this object.

    Parameters : | name : string Name of the attribute to remove

  `remove_trait_listener`(object, prefix='')
  `reset_traits`(traits=None, **metadata)

    Resets some or all of an object’s trait attributes to their default values.

    Parameters : | traits : list of strings Names of trait attributes to reset
    Returns : | A list of attributes that the method was unable to reset, which is empty : if all the attributes were successfully reset. :

  `set`(trait_change_notify=True, **traits)

    Shortcut for setting object trait attributes.

    Parameters : | trait_change_notify : Boolean If True (the default), then each value assigned may generate a trait change notification. If False, then no trait change notifications will be generated. (see also: trait_setq) traits : list of key/value pairs Trait attributes and their values to be set
    Returns : | self : The method returns this object, after setting attributes.

  classmethod `set_trait_dispatch_handler`(name, klass, override=False)

    Sets a trait notification dispatch handler.

  `sync_trait`(trait_name, object, alias=None, mutual=True, remove=False)

    Synchronizes the value of a trait attribute on this object with a trait attribute on another object.

    Parameters : | name : string Name of the trait attribute on this object object : object The object with which to synchronize alias : string Name of the trait attribute on other; if None or omitted, same as name. mutual : Boolean or integer Indicates whether synchronization is mutual (True or non-zero) or one-way (False or zero) remove : Boolean or integer Indicates whether sychronization is being added (False or zero) or removed (True or non-zero)

  `trait`(name, force=False, copy=False)

    Returns the trait definition for the name trait attribute.

    Parameters : | name : string Name of the attribute whose trait definition is to be returned force : Boolean Indicates whether to return a trait definition if name is not explicitly defined copy : Boolean Indicates whether to return the original trait definition or a copy

  `trait_context`()

    Returns the default context to use for editing or configuring traits.

  `trait_get`(*names, **metadata)

    Shortcut for getting object trait attributes.

    Parameters : | names : list of trait attribute names Trait attributes whose values are requested
    Returns : | A dictionary whose keys are the names passed as arguments and whose : values are the corresponding trait values :

  `trait_items_event`(event_trait, name, items_event)
  classmethod `trait_monitor`(handler, remove=False)

    Adds or removes the specified handler from the list of active monitors.

    Parameters : | handler : function The function to add or remove as a monitor. remove : boolean Flag indicating whether to remove (True) or add the specified handler as a monitor for this class.

  `trait_names`(**metadata)

    Returns a list of the names of all trait attributes whose definitions match the set of metadata criteria specified.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `trait_property_changed`(name, old_value[, new_value])
  `trait_set`(trait_change_notify=True, **traits)

    Shortcut for setting object trait attributes.

    Parameters : | trait_change_notify : Boolean If True (the default), then each value assigned may generate a trait change notification. If False, then no trait change notifications will be generated. (see also: trait_setq) traits : list of key/value pairs Trait attributes and their values to be set
    Returns : | self : The method returns this object, after setting attributes.

  `trait_setq`(**traits)

    Shortcut for setting object trait attributes.

    Parameters : | traits : list of key/value pairs Trait attributes and their values to be set. No trait change notifications will be generated for any values assigned (see also: trait_set).
    Returns : | self : The method returns this object, after setting attributes.

  classmethod `trait_subclasses`(all=False)

    Returns a list of the immediate (or all) subclasses of this class.

    Parameters : | all : Boolean Indicates whether to return all subclasses of this class. If False, only immediate subclasses are returned.

  `trait_view`(name=None, view_element=None)

    Gets or sets a ViewElement associated with an object’s class.

    Parameters : | name : string Name of a view element view_element : a ViewElement object View element to associate
    Returns : | A view element. :

  `trait_view_elements`()

    Returns the ViewElements object associated with the object’s class.

    The returned object can be used to access all the view elements associated with the class.

  `trait_views`(klass=None)

    Returns a list of the names of all view elements associated with the current object’s class.

    Parameters : | klass : a class A class, such that all returned names must correspond to instances of this class. Possible values include: Group Item View ViewElement ViewSubElement

  `traits`(**metadata)

    Returns a dictionary containing the definitions of all of the trait attributes of this object that match the set of metadata criteria.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `traits_init`()
  `traits_inited`([True])
  `validate_trait`(name, value)

    Validates whether a value is legal for a trait.

    Returns the validated value if it is valid.

  `wrappers` = {'new': <class traits.trait_notifiers.NewTraitChangeNotifyWrapper at 0x37947a0>, 'ui': <class traits.trait_notifiers.FastUITraitChangeNotifyWrapper at 0x37946d0>, 'extended': <class traits.trait_notifiers.ExtendedTraitChangeNotifyWrapper at 0x3794668>, 'fast_ui': <class traits.trait_notifiers.FastUITraitChangeNotifyWrapper at 0x37946d0>, 'same': <class traits.trait_notifiers.TraitChangeNotifyWrapper at 0x3794600>}

### `DynamicTraitedSpec`

class `nipype.interfaces.base.``DynamicTraitedSpec`(**kwargs)

  Bases: `nipype.interfaces.base.BaseTraitedSpec`

  A subclass to handle dynamic traits

  This class is a workaround for add_traits and clone_traits not functioning well together.

  `__init__`(**kwargs)

    Initialize handlers and inputs

  classmethod `add_class_trait`(name, *trait)

    Adds a named trait attribute to this class.

    Parameters : | name : string Name of the attribute to add trait : a trait or a value that can be converted to a trait using Trait() Trait definition of the attribute. It can be a single value or a list equivalent to an argument list for the Trait() function

  `add_trait`(name, *trait)

    Adds a trait attribute to this object.

    Parameters : | name : string Name of the attribute to add trait : trait or a value that can be converted to a trait by Trait() Trait definition for name. If more than one value is specified, it is equivalent to passing the entire list of values to Trait().

  classmethod `add_trait_category`(category)

    Adds a trait category to a class.

  `add_trait_listener`(object, prefix='')
  `all_trait_names`()

    Returns the list of all trait names, including implicitly defined traits.

  `base_trait`(name)

    Returns the base trait definition for a trait attribute.

    Parameters : | name : string Name of the attribute whose trait definition is returned.

  classmethod `class_default_traits_view`()

    Returns the name of the default traits view for the class.

  classmethod `class_editable_traits`()

    Returns an alphabetically sorted list of the names of non-event trait attributes associated with the current class.

  classmethod `class_trait_names`(**metadata)

    Returns a list of the names of all trait attributes whose definitions match the set of metadata criteria specified.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  classmethod `class_trait_view`(name=None, view_element=None)
  classmethod `class_trait_view_elements`()

    Returns the ViewElements object associated with the class.

    The returned object can be used to access all the view elements associated with the class.

  classmethod `class_traits`(**metadata)

    Returns a dictionary containing the definitions of all of the trait attributes of the class that match the set of metadata criteria.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `clone_traits`(traits=None, memo=None, copy=None, **metadata)

    Clones a new object from this one, optionally copying only a specified set of traits.

    Parameters : | traits : list of strings The names of the trait attributes to copy. memo : dictionary A dictionary of objects that have already been copied. copy : None | ‘deep’ | ‘shallow’ The type of copy to perform on any trait that does not have explicit ‘copy’ metadata. A value of None means ‘copy reference’.
    Returns : | The newly cloned object. :

  `configure_traits`(filename=None, view=None, kind=None, edit=True, context=None, handler=None, id='', scrollable=None, **args)

    Creates and displays a dialog box for editing values of trait attributes, as if it were a complete, self-contained GUI application.

    Parameters : | filename : string The name (including path) of a file that contains a pickled representation of the current object. When this parameter is specified, the method reads the corresponding file (if it exists) to restore the saved values of the object’s traits before displaying them. If the user confirms the dialog box (by clicking OK), the new values are written to the file. If this parameter is not specified, the values are loaded from the in-memory object, and are not persisted when the dialog box is closed. view : view or string A View object (or its name) that defines a user interface for editing trait attribute values of the current object. If the view is defined as an attribute on this class, use the name of the attribute. Otherwise, use a reference to the view object. If this attribute is not specified, the View object returned by trait_view() is used. kind : string The type of user interface window to create. See the traitsui.view.kind_trait trait for values and their meanings. If kind is unspecified or None, the kind attribute of the View object is used. edit : Boolean Indicates whether to display a user interface. If filename specifies an existing file, setting edit to False loads the saved values from that file into the object without requiring user interaction. context : object or dictionary A single object or a dictionary of string/object pairs, whose trait attributes are to be edited. If not specified, the current object is used handler : Handler object A handler object used for event handling in the dialog box. If None, the default handler for Traits UI is used. id : string A unique ID for persisting preferences about this user interface, such as size and position. If not specified, no user preferences are saved. scrollable : Boolean Indicates whether the dialog box should be scrollable. When set to True, scroll bars appear on the dialog box if it is not large enough to display all of the items in the view at one time.

  `copy_traits`(other, traits=None, memo=None, copy=None, **metadata)

    Copies another object’s trait attributes into this one.

    Parameters : | other : object The object whose trait attribute values should be copied. traits : list of strings A list of names of trait attributes to copy. If None or unspecified, the set of names returned by trait_names() is used. If ‘all’ or an empty list, the set of names returned by all_trait_names() is used. memo : dictionary A dictionary of objects that have already been copied. copy : None | ‘deep’ | ‘shallow’ The type of copy to perform on any trait that does not have explicit ‘copy’ metadata. A value of None means ‘copy reference’.
    Returns : | A list of attributes that the method was unable to copy, : which is empty if all the attributes were successfully copied. :

  `copyable_trait_names`(**metadata)

    Returns the list of trait names to copy or clone by default.

  `default_traits_view`()

    Returns the name of the default traits view for the object’s class.

  `edit_traits`(view=None, parent=None, kind=None, context=None, handler=None, id='', scrollable=None, **args)

    Displays a user interface window for editing trait attribute values.

    Parameters : | view : view or string A View object (or its name) that defines a user interface for editing trait attribute values of the current object. If the view is defined as an attribute on this class, use the name of the attribute. Otherwise, use a reference to the view object. If this attribute is not specified, the View object returned by trait_view() is used. parent : window handle A user interface component to use as the parent window for the object’s UI window. kind : string The type of user interface window to create. See the traitsui.view.kind_trait trait for values and their meanings. If kind is unspecified or None, the kind attribute of the View object is used. context : object or dictionary A single object or a dictionary of string/object pairs, whose trait attributes are to be edited. If not specified, the current object is used. handler : Handler object A handler object used for event handling in the dialog box. If None, the default handler for Traits UI is used. id : string A unique ID for persisting preferences about this user interface, such as size and position. If not specified, no user preferences are saved. scrollable : Boolean Indicates whether the dialog box should be scrollable. When set to True, scroll bars appear on the dialog box if it is not large enough to display all of the items in the view at one time.

  `editable_traits`()

    Returns an alphabetically sorted list of the names of non-event trait attributes associated with the current object.

  `get`(**kwargs)

    Returns traited class as a dict

    Augments the trait get function to return a dictionary without notification handles

  `get_hashval`(hash_method=None)

    Return a dictionary of our items with hashes for each file.

    Searches through dictionary items and if an item is a file, it calculates the md5 hash of the file contents and stores the file name and hash value as the new key value.

    However, the overall bunch hash is calculated only on the hash value of a file. The path and name of the file are not used in the overall hash calculation.

    Returns : | dict_withhash : dict Copy of our dictionary with the new file hashes included with each file. hashvalue : str The md5 hash value of the traited spec

  `get_traitsfree`(**kwargs)

    Returns traited class as a dict

    Augments the trait get function to return a dictionary without any traits. The dictionary does not contain any attributes that were Undefined

  `has_traits_interface`(*interfaces)

    Returns whether the object implements a specified traits interface.

    Parameters : | interfaces : one or more traits Interface (sub)classes.

  `items`()

    Name, trait generator for user modifiable traits

  `on_trait_change`(handler, name=None, remove=False, dispatch='same', priority=False, deferred=False, target=None)

    Causes the object to invoke a handler whenever a trait attribute matching a specified pattern is modified, or removes the association.

    Parameters : | handler : function A trait notification function for the name trait attribute, with one of the signatures described below. name : string The name of the trait attribute whose value changes trigger the notification. The name can specify complex patterns of trait changes using an extended name syntax, which is described below. remove : Boolean If True, removes the previously-set association between handler and name; if False (the default), creates the association. dispatch : string A string indicating the thread on which notifications must be run. Possible values are: ‘same’: Run notifications on the same thread as this one. ‘ui’: Run notifications on the UI thread, and allow them to be queued and deferred. ‘fast_ui’: Run notifications on the UI thread, and process them immediately. ‘new’: Run notifications in a new thread.

  `on_trait_event`(handler, name=None, remove=False, dispatch='same', priority=False, deferred=False, target=None)

    Causes the object to invoke a handler whenever a trait attribute matching a specified pattern is modified, or removes the association.

    Parameters : | handler : function A trait notification function for the name trait attribute, with one of the signatures described below. name : string The name of the trait attribute whose value changes trigger the notification. The name can specify complex patterns of trait changes using an extended name syntax, which is described below. remove : Boolean If True, removes the previously-set association between handler and name; if False (the default), creates the association. dispatch : string A string indicating the thread on which notifications must be run. Possible values are: ‘same’: Run notifications on the same thread as this one. ‘ui’: Run notifications on the UI thread, and allow them to be queued and deferred. ‘fast_ui’: Run notifications on the UI thread, and process them immediately. ‘new’: Run notifications in a new thread.

  `print_traits`(show_help=False, **metadata)

    Prints the values of all explicitly-defined, non-event trait attributes on the current object, in an easily readable format.

    Parameters : | show_help : Boolean Indicates whether to display additional descriptive information.

  `remove_trait`(name)

    Removes a trait attribute from this object.

    Parameters : | name : string Name of the attribute to remove

  `remove_trait_listener`(object, prefix='')
  `reset_traits`(traits=None, **metadata)

    Resets some or all of an object’s trait attributes to their default values.

    Parameters : | traits : list of strings Names of trait attributes to reset
    Returns : | A list of attributes that the method was unable to reset, which is empty : if all the attributes were successfully reset. :

  `set`(trait_change_notify=True, **traits)

    Shortcut for setting object trait attributes.

    Parameters : | trait_change_notify : Boolean If True (the default), then each value assigned may generate a trait change notification. If False, then no trait change notifications will be generated. (see also: trait_setq) traits : list of key/value pairs Trait attributes and their values to be set
    Returns : | self : The method returns this object, after setting attributes.

  classmethod `set_trait_dispatch_handler`(name, klass, override=False)

    Sets a trait notification dispatch handler.

  `sync_trait`(trait_name, object, alias=None, mutual=True, remove=False)

    Synchronizes the value of a trait attribute on this object with a trait attribute on another object.

    Parameters : | name : string Name of the trait attribute on this object object : object The object with which to synchronize alias : string Name of the trait attribute on other; if None or omitted, same as name. mutual : Boolean or integer Indicates whether synchronization is mutual (True or non-zero) or one-way (False or zero) remove : Boolean or integer Indicates whether sychronization is being added (False or zero) or removed (True or non-zero)

  `trait`(name, force=False, copy=False)

    Returns the trait definition for the name trait attribute.

    Parameters : | name : string Name of the attribute whose trait definition is to be returned force : Boolean Indicates whether to return a trait definition if name is not explicitly defined copy : Boolean Indicates whether to return the original trait definition or a copy

  `trait_context`()

    Returns the default context to use for editing or configuring traits.

  `trait_get`(*names, **metadata)

    Shortcut for getting object trait attributes.

    Parameters : | names : list of trait attribute names Trait attributes whose values are requested
    Returns : | A dictionary whose keys are the names passed as arguments and whose : values are the corresponding trait values :

  `trait_items_event`(event_trait, name, items_event)
  classmethod `trait_monitor`(handler, remove=False)

    Adds or removes the specified handler from the list of active monitors.

    Parameters : | handler : function The function to add or remove as a monitor. remove : boolean Flag indicating whether to remove (True) or add the specified handler as a monitor for this class.

  `trait_names`(**metadata)

    Returns a list of the names of all trait attributes whose definitions match the set of metadata criteria specified.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `trait_property_changed`(name, old_value[, new_value])
  `trait_set`(trait_change_notify=True, **traits)

    Shortcut for setting object trait attributes.

    Parameters : | trait_change_notify : Boolean If True (the default), then each value assigned may generate a trait change notification. If False, then no trait change notifications will be generated. (see also: trait_setq) traits : list of key/value pairs Trait attributes and their values to be set
    Returns : | self : The method returns this object, after setting attributes.

  `trait_setq`(**traits)

    Shortcut for setting object trait attributes.

    Parameters : | traits : list of key/value pairs Trait attributes and their values to be set. No trait change notifications will be generated for any values assigned (see also: trait_set).
    Returns : | self : The method returns this object, after setting attributes.

  classmethod `trait_subclasses`(all=False)

    Returns a list of the immediate (or all) subclasses of this class.

    Parameters : | all : Boolean Indicates whether to return all subclasses of this class. If False, only immediate subclasses are returned.

  `trait_view`(name=None, view_element=None)

    Gets or sets a ViewElement associated with an object’s class.

    Parameters : | name : string Name of a view element view_element : a ViewElement object View element to associate
    Returns : | A view element. :

  `trait_view_elements`()

    Returns the ViewElements object associated with the object’s class.

    The returned object can be used to access all the view elements associated with the class.

  `trait_views`(klass=None)

    Returns a list of the names of all view elements associated with the current object’s class.

    Parameters : | klass : a class A class, such that all returned names must correspond to instances of this class. Possible values include: Group Item View ViewElement ViewSubElement

  `traits`(**metadata)

    Returns a dictionary containing the definitions of all of the trait attributes of this object that match the set of metadata criteria.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `traits_init`()
  `traits_inited`([True])
  `validate_trait`(name, value)

    Validates whether a value is legal for a trait.

    Returns the validated value if it is valid.

  `wrappers` = {'new': <class traits.trait_notifiers.NewTraitChangeNotifyWrapper at 0x37947a0>, 'ui': <class traits.trait_notifiers.FastUITraitChangeNotifyWrapper at 0x37946d0>, 'extended': <class traits.trait_notifiers.ExtendedTraitChangeNotifyWrapper at 0x3794668>, 'fast_ui': <class traits.trait_notifiers.FastUITraitChangeNotifyWrapper at 0x37946d0>, 'same': <class traits.trait_notifiers.TraitChangeNotifyWrapper at 0x3794600>}

### `InputMultiPath`

class `nipype.interfaces.base.``InputMultiPath`(trait=None, value=None, minlen=0, maxlen=9223372036854775807, items=True, **metadata)

  Bases: `nipype.interfaces.base.MultiPath`

  Implements a user friendly traits that accepts one or more paths to files or directories. This is the input version which always returns a list. Default value of this trait is _Undefined. It does not accept empty lists.

  XXX This should only be used as a final resort. We should stick to established Traits to the extent possible.

  XXX This needs to be vetted by somebody who understands traits

      >>> from nipype.interfaces.base import InputMultiPath
      >>> class A(TraitedSpec):
      ...     foo = InputMultiPath(File(exists=False))
      >>> a = A()
      >>> a.foo
      <undefined>

      >>> a.foo = '/software/temp/foo.txt'
      >>> a.foo
      ['/software/temp/foo.txt']

      >>> a.foo = ['/software/temp/foo.txt']
      >>> a.foo
      ['/software/temp/foo.txt']

      >>> a.foo = ['/software/temp/foo.txt', '/software/temp/goo.txt']
      >>> a.foo
      ['/software/temp/foo.txt', '/software/temp/goo.txt']

  `__init__`(trait=None, value=None, minlen=0, maxlen=9223372036854775807, items=True, **metadata)

    Returns a List trait.

    Parameters : | trait : a trait or value that can be converted to a trait using Trait() The type of item that the list contains. If not specified, the list can contain items of any type. value : : Default value for the list minlen : integer The minimum length of a list that can be assigned to the trait. maxlen : integer The maximum length of a list that can be assigned to the trait. The length of the list assigned to the trait must be such that:: : minlen <= len(list) <= maxlen

  `arg_error`(method, arg_num, object, name, value)

    Raises a TraitError exception to notify the user that a method on an instance received a positional argument of an incorrect type.

    Parameters : | method : function The method that encountered the error arg_num : integer The position of the incorrect argument in the argument list object : object The object whose method was called name : string The name of the parameter corresponding to the incorrect argument value : object The value passed to the argument

  `as_ctrait`()

    Returns a CTrait corresponding to the trait defined by this class.

  `clone`(default_value=<missing>, **metadata)

    Clones the contents of this object into a new instance of the same class, and then modifies the cloned copy using the specified default_value and metadata. Returns the cloned object as the result.

    Note that subclasses can change the signature of this method if needed, but should always call the ‘super’ method if possible.

  `create_editor`()

    Returns the default UI editor for the trait.

  `default_value` = <undefined>
  `default_value_type` = 5
  `dup_arg_error`(method, arg_num, object, name)

    Raises a TraitError exception to notify the user that a method on an instance received an argument as both a keyword argument and a positional argument.

    Parameters : | method : function The method that encountered the error arg_num : integer The position of the incorrect argument in the argument list object : object The object whose method was called name : string The name of the parameter corresponding to the incorrect argument

  `editor` = None
  `error`(object, name, value)

    Raises a TraitError exception.

    Parameters : | object : object The object whose attribute is being assigned name : string The name of the attribute being assigned value : object The proposed new value for the attribute

  `full_info`(object, name, value)

    Returns a description of the trait.

  `get_default_value`()

    Returns a tuple of the form: (default_value_type, default_value) which describes the default value for this trait. The default implementation analyzes the value of the trait’s default_value attribute and determines an appropriate default_value_type for default_value. If you need to override this method to provide a different result tuple, the following values are valid values for default_value_type:

    > - 0, 1: The default_value item of the tuple is the default value.
    > - 2: The object containing the trait is the default value.
    > - 3: A new copy of the list specified by default_value is the default value.
    > - 4: A new copy of the dictionary specified by default_value is the default value.
    > - 5: A new instance of TraitListObject constructed using the default_value list is the default value.
    > - 6: A new instance of TraitDictObject constructed using the default_value dictionary is the default value.
    > - 7: default_value is a tuple of the form: (callable, args, kw), where callable is a callable, args is a tuple, and kw is either a dictionary or None. The default value is the result obtained by invoking callable(*args, **kw).
    > - 8: default_value is a callable. The default value is the result obtained by invoking default_value*(*object), where object is the object containing the trait. If the trait has a validate() method, the validate() method is also called to validate the result.
    > - 9: A new instance of TraitSetObject constructed using the default_value set is the default value.

  `get_editor`(trait=None)

    Returns a trait editor that allows the user to modify the trait trait.

    Parameters : | trait : trait The trait to be edited

  `get_value`(object, name, trait=None)

    Returns the current value of a property-based trait.

  `has_items` = False
  `info`()

    Must return a string describing the type of value accepted by the trait handler.

    The string should be a phrase describing the type defined by the TraitHandler subclass, rather than a complete sentence. For example, use the phrase, “a square sprocket” instead of the sentence, “The value must be a square sprocket.” The value returned by info() is combined with other information whenever an error occurs and therefore makes more sense to the user if the result is a phrase. The info() method is similar in purpose and use to the info attribute of a validator function.

    Note that the result can include information specific to the particular trait handler instance. For example, TraitRange instances return a string indicating the range of values acceptable to the handler (e.g., “an integer in the range from 1 to 9”). If the info() method is not overridden, the default method returns the value of the ‘info_text’ attribute.

  `info_text` = 'a legal value'
  `info_trait` = None
  `init`()

    Allows the trait to perform any additional initialization needed.

  `inner_traits`()

    Returns the inner trait (or traits) for this trait.

  `is_mapped` = False
  `is_valid`(object, name, value)
  `items_event`()
  `keyword_error`(method, object, name, value)

    Raises a TraitError exception to notify the user that a method on an instance received a keyword argument of an incorrect type.

    Parameters : | method : function The method that encountered the error object : object The object whose method was called name : string The name of the parameter corresponding to the incorrect argument value : The value passed to the argument

  `metadata` = {'type': 'trait'}
  `missing_arg_error`(method, arg_num, object, name)

    Raises a TraitError exception to notify the user that a method on an instance failed to receive a required positional argument.

    Parameters : | method : function The method that encountered the error arg_num : integer The position of the incorrect argument in the argument list object : object The object whose method was called name : string The name of the parameter corresponding to the incorrect argument

  `repr`(value)

    Returns a printable representation of a value along with its type.

    DEPRECATED: This functionality was only used to provide readable error messages. This functionality has been incorporated into TraitError itself.

    Parameters : | value : object The value to be printed.

  `return_error`(method, object, value)

    Raises a TraitError exception to notify the user that a method on an instance returned a value of incorrect type.

    Parameters : | method : function The method that encountered the error object : object The object whose method was called value : The value returned by the method

  `set_value`(object, name, value)

    Sets the cached value of a property-based trait and fires the appropriate trait change event.

  `validate`(object, name, value)

### `Interface`

class `nipype.interfaces.base.``Interface`(**inputs)

  Bases: `object`

  This is an abstract definition for Interface objects.

  It provides no functionality. It defines the necessary attributes and methods all Interface objects should have.

  `__init__`(**inputs)

    Initialize command with given args and inputs.

  `aggregate_outputs`(runtime=None, needed_outputs=None)

    Called to populate outputs

  `always_run`
  `can_resume`
  classmethod `help`()

    Prints class help

  `input_spec` = None
  `output_spec` = None
  `run`()

    Execute the command.

  `version`

### `InterfaceResult`

class `nipype.interfaces.base.``InterfaceResult`(interface, runtime, inputs=None, outputs=None)

  Bases: `object`

  Object that contains the results of running a particular Interface.

  Attributes : | version : version of this Interface result object (a readonly property) interface : class type A copy of the Interface class that was run to generate this result. inputs : a traits free representation of the inputs outputs : Bunch An Interface specific Bunch that contains all possible files that are generated by the interface. The outputs are used as the inputs to another node when interfaces are used in the pipeline. runtime : Bunch Contains attributes that describe the runtime environment when the Interface was run. Contains the attributes: cmdline : The command line string that was executed cwd : The directory the `cmdline` was executed in. stdout : The output of running the `cmdline`. stderr : Any error messages output from running `cmdline`. returncode : The code returned from running the `cmdline`.

  `__init__`(interface, runtime, inputs=None, outputs=None)
  `version`

### `MpiCommandLine`

class `nipype.interfaces.base.``MpiCommandLine`(command=None, **inputs)

  Bases: `nipype.interfaces.base.CommandLine`

  Implements functionality to interact with command line programs that can be run with MPI (i.e. using ‘mpiexec’).

  Examples

      >>> from nipype.interfaces.base import MpiCommandLine
      >>> mpi_cli = MpiCommandLine(command='my_mpi_prog')
      >>> mpi_cli.inputs.args = '-v'
      >>> mpi_cli.cmdline
      'my_mpi_prog -v'

      >>> mpi_cli.inputs.use_mpi = True
      >>> mpi_cli.inputs.n_procs = 8
      >>> mpi_cli.cmdline
      'mpiexec -n 8 my_mpi_prog -v'

  `__init__`(command=None, **inputs)
  `aggregate_outputs`(runtime=None, needed_outputs=None)

    Collate expected outputs and check for existence

  `always_run`
  `can_resume`
  `cmd`

    sets base command, immutable

  `cmdline`

    Adds ‘mpiexec’ to begining of command

  classmethod `help`(returnhelp=False)
  `input_spec`

    alias of `MpiCommandLineInputSpec`

  `output_spec` = None
  `raise_exception`(runtime)
  `run`(**inputs)

    Execute this interface.

    This interface will not raise an exception if runtime.returncode is non-zero.

    Parameters : | inputs : allows the interface settings to be updated
    Returns : | results : an InterfaceResult object containing a copy of the instance that was executed, provenance information and, if successful, results :

  `version`
  `version_from_command`(flag='-v')

### `MpiCommandLineInputSpec`

class `nipype.interfaces.base.``MpiCommandLineInputSpec`(**kwargs)

  Bases: `nipype.interfaces.base.CommandLineInputSpec`

  `__init__`(**kwargs)

    Initialize handlers and inputs

  classmethod `add_class_trait`(name, *trait)

    Adds a named trait attribute to this class.

    Parameters : | name : string Name of the attribute to add trait : a trait or a value that can be converted to a trait using Trait() Trait definition of the attribute. It can be a single value or a list equivalent to an argument list for the Trait() function

  `add_trait`(name, *trait)

    Adds a trait attribute to this object.

    Parameters : | name : string Name of the attribute to add trait : trait or a value that can be converted to a trait by Trait() Trait definition for name. If more than one value is specified, it is equivalent to passing the entire list of values to Trait().

  classmethod `add_trait_category`(category)

    Adds a trait category to a class.

  `add_trait_listener`(object, prefix='')
  `all_trait_names`()

    Returns the list of all trait names, including implicitly defined traits.

  `base_trait`(name)

    Returns the base trait definition for a trait attribute.

    Parameters : | name : string Name of the attribute whose trait definition is returned.

  classmethod `class_default_traits_view`()

    Returns the name of the default traits view for the class.

  classmethod `class_editable_traits`()

    Returns an alphabetically sorted list of the names of non-event trait attributes associated with the current class.

  classmethod `class_trait_names`(**metadata)

    Returns a list of the names of all trait attributes whose definitions match the set of metadata criteria specified.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  classmethod `class_trait_view`(name=None, view_element=None)
  classmethod `class_trait_view_elements`()

    Returns the ViewElements object associated with the class.

    The returned object can be used to access all the view elements associated with the class.

  classmethod `class_traits`(**metadata)

    Returns a dictionary containing the definitions of all of the trait attributes of the class that match the set of metadata criteria.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `clone_traits`(traits=None, memo=None, copy=None, **metadata)

    Clones a new object from this one, optionally copying only a specified set of traits.

    Parameters : | traits : list of strings The names of the trait attributes to copy. memo : dictionary A dictionary of objects that have already been copied. copy : None | ‘deep’ | ‘shallow’ The type of copy to perform on any trait that does not have explicit ‘copy’ metadata. A value of None means ‘copy reference’.
    Returns : | The newly cloned object. :

  `configure_traits`(filename=None, view=None, kind=None, edit=True, context=None, handler=None, id='', scrollable=None, **args)

    Creates and displays a dialog box for editing values of trait attributes, as if it were a complete, self-contained GUI application.

    Parameters : | filename : string The name (including path) of a file that contains a pickled representation of the current object. When this parameter is specified, the method reads the corresponding file (if it exists) to restore the saved values of the object’s traits before displaying them. If the user confirms the dialog box (by clicking OK), the new values are written to the file. If this parameter is not specified, the values are loaded from the in-memory object, and are not persisted when the dialog box is closed. view : view or string A View object (or its name) that defines a user interface for editing trait attribute values of the current object. If the view is defined as an attribute on this class, use the name of the attribute. Otherwise, use a reference to the view object. If this attribute is not specified, the View object returned by trait_view() is used. kind : string The type of user interface window to create. See the traitsui.view.kind_trait trait for values and their meanings. If kind is unspecified or None, the kind attribute of the View object is used. edit : Boolean Indicates whether to display a user interface. If filename specifies an existing file, setting edit to False loads the saved values from that file into the object without requiring user interaction. context : object or dictionary A single object or a dictionary of string/object pairs, whose trait attributes are to be edited. If not specified, the current object is used handler : Handler object A handler object used for event handling in the dialog box. If None, the default handler for Traits UI is used. id : string A unique ID for persisting preferences about this user interface, such as size and position. If not specified, no user preferences are saved. scrollable : Boolean Indicates whether the dialog box should be scrollable. When set to True, scroll bars appear on the dialog box if it is not large enough to display all of the items in the view at one time.

  `copy_traits`(other, traits=None, memo=None, copy=None, **metadata)

    Copies another object’s trait attributes into this one.

    Parameters : | other : object The object whose trait attribute values should be copied. traits : list of strings A list of names of trait attributes to copy. If None or unspecified, the set of names returned by trait_names() is used. If ‘all’ or an empty list, the set of names returned by all_trait_names() is used. memo : dictionary A dictionary of objects that have already been copied. copy : None | ‘deep’ | ‘shallow’ The type of copy to perform on any trait that does not have explicit ‘copy’ metadata. A value of None means ‘copy reference’.
    Returns : | A list of attributes that the method was unable to copy, : which is empty if all the attributes were successfully copied. :

  `copyable_trait_names`(**metadata)

    Returns the list of trait names to copy or clone by default.

  `default_traits_view`()

    Returns the name of the default traits view for the object’s class.

  `edit_traits`(view=None, parent=None, kind=None, context=None, handler=None, id='', scrollable=None, **args)

    Displays a user interface window for editing trait attribute values.

    Parameters : | view : view or string A View object (or its name) that defines a user interface for editing trait attribute values of the current object. If the view is defined as an attribute on this class, use the name of the attribute. Otherwise, use a reference to the view object. If this attribute is not specified, the View object returned by trait_view() is used. parent : window handle A user interface component to use as the parent window for the object’s UI window. kind : string The type of user interface window to create. See the traitsui.view.kind_trait trait for values and their meanings. If kind is unspecified or None, the kind attribute of the View object is used. context : object or dictionary A single object or a dictionary of string/object pairs, whose trait attributes are to be edited. If not specified, the current object is used. handler : Handler object A handler object used for event handling in the dialog box. If None, the default handler for Traits UI is used. id : string A unique ID for persisting preferences about this user interface, such as size and position. If not specified, no user preferences are saved. scrollable : Boolean Indicates whether the dialog box should be scrollable. When set to True, scroll bars appear on the dialog box if it is not large enough to display all of the items in the view at one time.

  `editable_traits`()

    Returns an alphabetically sorted list of the names of non-event trait attributes associated with the current object.

  `get`(**kwargs)

    Returns traited class as a dict

    Augments the trait get function to return a dictionary without notification handles

  `get_hashval`(hash_method=None)

    Return a dictionary of our items with hashes for each file.

    Searches through dictionary items and if an item is a file, it calculates the md5 hash of the file contents and stores the file name and hash value as the new key value.

    However, the overall bunch hash is calculated only on the hash value of a file. The path and name of the file are not used in the overall hash calculation.

    Returns : | dict_withhash : dict Copy of our dictionary with the new file hashes included with each file. hashvalue : str The md5 hash value of the traited spec

  `get_traitsfree`(**kwargs)

    Returns traited class as a dict

    Augments the trait get function to return a dictionary without any traits. The dictionary does not contain any attributes that were Undefined

  `has_traits_interface`(*interfaces)

    Returns whether the object implements a specified traits interface.

    Parameters : | interfaces : one or more traits Interface (sub)classes.

  `items`()

    Name, trait generator for user modifiable traits

  `on_trait_change`(handler, name=None, remove=False, dispatch='same', priority=False, deferred=False, target=None)

    Causes the object to invoke a handler whenever a trait attribute matching a specified pattern is modified, or removes the association.

    Parameters : | handler : function A trait notification function for the name trait attribute, with one of the signatures described below. name : string The name of the trait attribute whose value changes trigger the notification. The name can specify complex patterns of trait changes using an extended name syntax, which is described below. remove : Boolean If True, removes the previously-set association between handler and name; if False (the default), creates the association. dispatch : string A string indicating the thread on which notifications must be run. Possible values are: ‘same’: Run notifications on the same thread as this one. ‘ui’: Run notifications on the UI thread, and allow them to be queued and deferred. ‘fast_ui’: Run notifications on the UI thread, and process them immediately. ‘new’: Run notifications in a new thread.

  `on_trait_event`(handler, name=None, remove=False, dispatch='same', priority=False, deferred=False, target=None)

    Causes the object to invoke a handler whenever a trait attribute matching a specified pattern is modified, or removes the association.

    Parameters : | handler : function A trait notification function for the name trait attribute, with one of the signatures described below. name : string The name of the trait attribute whose value changes trigger the notification. The name can specify complex patterns of trait changes using an extended name syntax, which is described below. remove : Boolean If True, removes the previously-set association between handler and name; if False (the default), creates the association. dispatch : string A string indicating the thread on which notifications must be run. Possible values are: ‘same’: Run notifications on the same thread as this one. ‘ui’: Run notifications on the UI thread, and allow them to be queued and deferred. ‘fast_ui’: Run notifications on the UI thread, and process them immediately. ‘new’: Run notifications in a new thread.

  `print_traits`(show_help=False, **metadata)

    Prints the values of all explicitly-defined, non-event trait attributes on the current object, in an easily readable format.

    Parameters : | show_help : Boolean Indicates whether to display additional descriptive information.

  `remove_trait`(name)

    Removes a trait attribute from this object.

    Parameters : | name : string Name of the attribute to remove

  `remove_trait_listener`(object, prefix='')
  `reset_traits`(traits=None, **metadata)

    Resets some or all of an object’s trait attributes to their default values.

    Parameters : | traits : list of strings Names of trait attributes to reset
    Returns : | A list of attributes that the method was unable to reset, which is empty : if all the attributes were successfully reset. :

  `set`(trait_change_notify=True, **traits)

    Shortcut for setting object trait attributes.

    Parameters : | trait_change_notify : Boolean If True (the default), then each value assigned may generate a trait change notification. If False, then no trait change notifications will be generated. (see also: trait_setq) traits : list of key/value pairs Trait attributes and their values to be set
    Returns : | self : The method returns this object, after setting attributes.

  classmethod `set_trait_dispatch_handler`(name, klass, override=False)

    Sets a trait notification dispatch handler.

  `sync_trait`(trait_name, object, alias=None, mutual=True, remove=False)

    Synchronizes the value of a trait attribute on this object with a trait attribute on another object.

    Parameters : | name : string Name of the trait attribute on this object object : object The object with which to synchronize alias : string Name of the trait attribute on other; if None or omitted, same as name. mutual : Boolean or integer Indicates whether synchronization is mutual (True or non-zero) or one-way (False or zero) remove : Boolean or integer Indicates whether sychronization is being added (False or zero) or removed (True or non-zero)

  `trait`(name, force=False, copy=False)

    Returns the trait definition for the name trait attribute.

    Parameters : | name : string Name of the attribute whose trait definition is to be returned force : Boolean Indicates whether to return a trait definition if name is not explicitly defined copy : Boolean Indicates whether to return the original trait definition or a copy

  `trait_context`()

    Returns the default context to use for editing or configuring traits.

  `trait_get`(*names, **metadata)

    Shortcut for getting object trait attributes.

    Parameters : | names : list of trait attribute names Trait attributes whose values are requested
    Returns : | A dictionary whose keys are the names passed as arguments and whose : values are the corresponding trait values :

  `trait_items_event`(event_trait, name, items_event)
  classmethod `trait_monitor`(handler, remove=False)

    Adds or removes the specified handler from the list of active monitors.

    Parameters : | handler : function The function to add or remove as a monitor. remove : boolean Flag indicating whether to remove (True) or add the specified handler as a monitor for this class.

  `trait_names`(**metadata)

    Returns a list of the names of all trait attributes whose definitions match the set of metadata criteria specified.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `trait_property_changed`(name, old_value[, new_value])
  `trait_set`(trait_change_notify=True, **traits)

    Shortcut for setting object trait attributes.

    Parameters : | trait_change_notify : Boolean If True (the default), then each value assigned may generate a trait change notification. If False, then no trait change notifications will be generated. (see also: trait_setq) traits : list of key/value pairs Trait attributes and their values to be set
    Returns : | self : The method returns this object, after setting attributes.

  `trait_setq`(**traits)

    Shortcut for setting object trait attributes.

    Parameters : | traits : list of key/value pairs Trait attributes and their values to be set. No trait change notifications will be generated for any values assigned (see also: trait_set).
    Returns : | self : The method returns this object, after setting attributes.

  classmethod `trait_subclasses`(all=False)

    Returns a list of the immediate (or all) subclasses of this class.

    Parameters : | all : Boolean Indicates whether to return all subclasses of this class. If False, only immediate subclasses are returned.

  `trait_view`(name=None, view_element=None)

    Gets or sets a ViewElement associated with an object’s class.

    Parameters : | name : string Name of a view element view_element : a ViewElement object View element to associate
    Returns : | A view element. :

  `trait_view_elements`()

    Returns the ViewElements object associated with the object’s class.

    The returned object can be used to access all the view elements associated with the class.

  `trait_views`(klass=None)

    Returns a list of the names of all view elements associated with the current object’s class.

    Parameters : | klass : a class A class, such that all returned names must correspond to instances of this class. Possible values include: Group Item View ViewElement ViewSubElement

  `traits`(**metadata)

    Returns a dictionary containing the definitions of all of the trait attributes of this object that match the set of metadata criteria.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `traits_init`()
  `traits_inited`([True])
  `validate_trait`(name, value)

    Validates whether a value is legal for a trait.

    Returns the validated value if it is valid.

  `wrappers` = {'new': <class traits.trait_notifiers.NewTraitChangeNotifyWrapper at 0x37947a0>, 'ui': <class traits.trait_notifiers.FastUITraitChangeNotifyWrapper at 0x37946d0>, 'extended': <class traits.trait_notifiers.ExtendedTraitChangeNotifyWrapper at 0x3794668>, 'fast_ui': <class traits.trait_notifiers.FastUITraitChangeNotifyWrapper at 0x37946d0>, 'same': <class traits.trait_notifiers.TraitChangeNotifyWrapper at 0x3794600>}

### `MultiPath`

class `nipype.interfaces.base.``MultiPath`(trait=None, value=None, minlen=0, maxlen=9223372036854775807, items=True, **metadata)

  Bases: `traits.trait_types.List`

  Abstract class - shared functionality of input and output MultiPath

  `__init__`(trait=None, value=None, minlen=0, maxlen=9223372036854775807, items=True, **metadata)

    Returns a List trait.

    Parameters : | trait : a trait or value that can be converted to a trait using Trait() The type of item that the list contains. If not specified, the list can contain items of any type. value : : Default value for the list minlen : integer The minimum length of a list that can be assigned to the trait. maxlen : integer The maximum length of a list that can be assigned to the trait. The length of the list assigned to the trait must be such that:: : minlen <= len(list) <= maxlen

  `arg_error`(method, arg_num, object, name, value)

    Raises a TraitError exception to notify the user that a method on an instance received a positional argument of an incorrect type.

    Parameters : | method : function The method that encountered the error arg_num : integer The position of the incorrect argument in the argument list object : object The object whose method was called name : string The name of the parameter corresponding to the incorrect argument value : object The value passed to the argument

  `as_ctrait`()

    Returns a CTrait corresponding to the trait defined by this class.

  `clone`(default_value=<missing>, **metadata)

    Clones the contents of this object into a new instance of the same class, and then modifies the cloned copy using the specified default_value and metadata. Returns the cloned object as the result.

    Note that subclasses can change the signature of this method if needed, but should always call the ‘super’ method if possible.

  `create_editor`()

    Returns the default UI editor for the trait.

  `default_value` = <undefined>
  `default_value_type` = 5
  `dup_arg_error`(method, arg_num, object, name)

    Raises a TraitError exception to notify the user that a method on an instance received an argument as both a keyword argument and a positional argument.

    Parameters : | method : function The method that encountered the error arg_num : integer The position of the incorrect argument in the argument list object : object The object whose method was called name : string The name of the parameter corresponding to the incorrect argument

  `editor` = None
  `error`(object, name, value)

    Raises a TraitError exception.

    Parameters : | object : object The object whose attribute is being assigned name : string The name of the attribute being assigned value : object The proposed new value for the attribute

  `full_info`(object, name, value)

    Returns a description of the trait.

  `get_default_value`()

    Returns a tuple of the form: (default_value_type, default_value) which describes the default value for this trait. The default implementation analyzes the value of the trait’s default_value attribute and determines an appropriate default_value_type for default_value. If you need to override this method to provide a different result tuple, the following values are valid values for default_value_type:

    > - 0, 1: The default_value item of the tuple is the default value.
    > - 2: The object containing the trait is the default value.
    > - 3: A new copy of the list specified by default_value is the default value.
    > - 4: A new copy of the dictionary specified by default_value is the default value.
    > - 5: A new instance of TraitListObject constructed using the default_value list is the default value.
    > - 6: A new instance of TraitDictObject constructed using the default_value dictionary is the default value.
    > - 7: default_value is a tuple of the form: (callable, args, kw), where callable is a callable, args is a tuple, and kw is either a dictionary or None. The default value is the result obtained by invoking callable(*args, **kw).
    > - 8: default_value is a callable. The default value is the result obtained by invoking default_value*(*object), where object is the object containing the trait. If the trait has a validate() method, the validate() method is also called to validate the result.
    > - 9: A new instance of TraitSetObject constructed using the default_value set is the default value.

  `get_editor`(trait=None)

    Returns a trait editor that allows the user to modify the trait trait.

    Parameters : | trait : trait The trait to be edited

  `get_value`(object, name, trait=None)

    Returns the current value of a property-based trait.

  `has_items` = False
  `info`()

    Must return a string describing the type of value accepted by the trait handler.

    The string should be a phrase describing the type defined by the TraitHandler subclass, rather than a complete sentence. For example, use the phrase, “a square sprocket” instead of the sentence, “The value must be a square sprocket.” The value returned by info() is combined with other information whenever an error occurs and therefore makes more sense to the user if the result is a phrase. The info() method is similar in purpose and use to the info attribute of a validator function.

    Note that the result can include information specific to the particular trait handler instance. For example, TraitRange instances return a string indicating the range of values acceptable to the handler (e.g., “an integer in the range from 1 to 9”). If the info() method is not overridden, the default method returns the value of the ‘info_text’ attribute.

  `info_text` = 'a legal value'
  `info_trait` = None
  `init`()

    Allows the trait to perform any additional initialization needed.

  `inner_traits`()

    Returns the inner trait (or traits) for this trait.

  `is_mapped` = False
  `is_valid`(object, name, value)
  `items_event`()
  `keyword_error`(method, object, name, value)

    Raises a TraitError exception to notify the user that a method on an instance received a keyword argument of an incorrect type.

    Parameters : | method : function The method that encountered the error object : object The object whose method was called name : string The name of the parameter corresponding to the incorrect argument value : The value passed to the argument

  `metadata` = {'type': 'trait'}
  `missing_arg_error`(method, arg_num, object, name)

    Raises a TraitError exception to notify the user that a method on an instance failed to receive a required positional argument.

    Parameters : | method : function The method that encountered the error arg_num : integer The position of the incorrect argument in the argument list object : object The object whose method was called name : string The name of the parameter corresponding to the incorrect argument

  `repr`(value)

    Returns a printable representation of a value along with its type.

    DEPRECATED: This functionality was only used to provide readable error messages. This functionality has been incorporated into TraitError itself.

    Parameters : | value : object The value to be printed.

  `return_error`(method, object, value)

    Raises a TraitError exception to notify the user that a method on an instance returned a value of incorrect type.

    Parameters : | method : function The method that encountered the error object : object The object whose method was called value : The value returned by the method

  `set_value`(object, name, value)

    Sets the cached value of a property-based trait and fires the appropriate trait change event.

  `validate`(object, name, value)

### `OutputMultiPath`

class `nipype.interfaces.base.``OutputMultiPath`(trait=None, value=None, minlen=0, maxlen=9223372036854775807, items=True, **metadata)

  Bases: `nipype.interfaces.base.MultiPath`

  Implements a user friendly traits that accepts one or more paths to files or directories. This is the output version which return a single string whenever possible (when it was set to a single value or a list of length 1). Default value of this trait is _Undefined. It does not accept empty lists.

  XXX This should only be used as a final resort. We should stick to established Traits to the extent possible.

  XXX This needs to be vetted by somebody who understands traits

      >>> from nipype.interfaces.base import OutputMultiPath
      >>> class A(TraitedSpec):
      ...     foo = OutputMultiPath(File(exists=False))
      >>> a = A()
      >>> a.foo
      <undefined>

      >>> a.foo = '/software/temp/foo.txt'
      >>> a.foo
      '/software/temp/foo.txt'

      >>> a.foo = ['/software/temp/foo.txt']
      >>> a.foo
      '/software/temp/foo.txt'

      >>> a.foo = ['/software/temp/foo.txt', '/software/temp/goo.txt']
      >>> a.foo
      ['/software/temp/foo.txt', '/software/temp/goo.txt']

  `__init__`(trait=None, value=None, minlen=0, maxlen=9223372036854775807, items=True, **metadata)

    Returns a List trait.

    Parameters : | trait : a trait or value that can be converted to a trait using Trait() The type of item that the list contains. If not specified, the list can contain items of any type. value : : Default value for the list minlen : integer The minimum length of a list that can be assigned to the trait. maxlen : integer The maximum length of a list that can be assigned to the trait. The length of the list assigned to the trait must be such that:: : minlen <= len(list) <= maxlen

  `arg_error`(method, arg_num, object, name, value)

    Raises a TraitError exception to notify the user that a method on an instance received a positional argument of an incorrect type.

    Parameters : | method : function The method that encountered the error arg_num : integer The position of the incorrect argument in the argument list object : object The object whose method was called name : string The name of the parameter corresponding to the incorrect argument value : object The value passed to the argument

  `as_ctrait`()

    Returns a CTrait corresponding to the trait defined by this class.

  `clone`(default_value=<missing>, **metadata)

    Clones the contents of this object into a new instance of the same class, and then modifies the cloned copy using the specified default_value and metadata. Returns the cloned object as the result.

    Note that subclasses can change the signature of this method if needed, but should always call the ‘super’ method if possible.

  `create_editor`()

    Returns the default UI editor for the trait.

  `default_value` = <undefined>
  `default_value_type` = 5
  `dup_arg_error`(method, arg_num, object, name)

    Raises a TraitError exception to notify the user that a method on an instance received an argument as both a keyword argument and a positional argument.

    Parameters : | method : function The method that encountered the error arg_num : integer The position of the incorrect argument in the argument list object : object The object whose method was called name : string The name of the parameter corresponding to the incorrect argument

  `editor` = None
  `error`(object, name, value)

    Raises a TraitError exception.

    Parameters : | object : object The object whose attribute is being assigned name : string The name of the attribute being assigned value : object The proposed new value for the attribute

  `full_info`(object, name, value)

    Returns a description of the trait.

  `get`(object, name)
  `get_default_value`()

    Returns a tuple of the form: (default_value_type, default_value) which describes the default value for this trait. The default implementation analyzes the value of the trait’s default_value attribute and determines an appropriate default_value_type for default_value. If you need to override this method to provide a different result tuple, the following values are valid values for default_value_type:

    > - 0, 1: The default_value item of the tuple is the default value.
    > - 2: The object containing the trait is the default value.
    > - 3: A new copy of the list specified by default_value is the default value.
    > - 4: A new copy of the dictionary specified by default_value is the default value.
    > - 5: A new instance of TraitListObject constructed using the default_value list is the default value.
    > - 6: A new instance of TraitDictObject constructed using the default_value dictionary is the default value.
    > - 7: default_value is a tuple of the form: (callable, args, kw), where callable is a callable, args is a tuple, and kw is either a dictionary or None. The default value is the result obtained by invoking callable(*args, **kw).
    > - 8: default_value is a callable. The default value is the result obtained by invoking default_value*(*object), where object is the object containing the trait. If the trait has a validate() method, the validate() method is also called to validate the result.
    > - 9: A new instance of TraitSetObject constructed using the default_value set is the default value.

  `get_editor`(trait=None)

    Returns a trait editor that allows the user to modify the trait trait.

    Parameters : | trait : trait The trait to be edited

  `get_value`(object, name, trait=None)

    Returns the current value of a property-based trait.

  `has_items` = False
  `info`()

    Must return a string describing the type of value accepted by the trait handler.

    The string should be a phrase describing the type defined by the TraitHandler subclass, rather than a complete sentence. For example, use the phrase, “a square sprocket” instead of the sentence, “The value must be a square sprocket.” The value returned by info() is combined with other information whenever an error occurs and therefore makes more sense to the user if the result is a phrase. The info() method is similar in purpose and use to the info attribute of a validator function.

    Note that the result can include information specific to the particular trait handler instance. For example, TraitRange instances return a string indicating the range of values acceptable to the handler (e.g., “an integer in the range from 1 to 9”). If the info() method is not overridden, the default method returns the value of the ‘info_text’ attribute.

  `info_text` = 'a legal value'
  `info_trait` = None
  `init`()

    Allows the trait to perform any additional initialization needed.

  `inner_traits`()

    Returns the inner trait (or traits) for this trait.

  `is_mapped` = False
  `is_valid`(object, name, value)
  `items_event`()
  `keyword_error`(method, object, name, value)

    Raises a TraitError exception to notify the user that a method on an instance received a keyword argument of an incorrect type.

    Parameters : | method : function The method that encountered the error object : object The object whose method was called name : string The name of the parameter corresponding to the incorrect argument value : The value passed to the argument

  `metadata` = {'type': 'trait'}
  `missing_arg_error`(method, arg_num, object, name)

    Raises a TraitError exception to notify the user that a method on an instance failed to receive a required positional argument.

    Parameters : | method : function The method that encountered the error arg_num : integer The position of the incorrect argument in the argument list object : object The object whose method was called name : string The name of the parameter corresponding to the incorrect argument

  `repr`(value)

    Returns a printable representation of a value along with its type.

    DEPRECATED: This functionality was only used to provide readable error messages. This functionality has been incorporated into TraitError itself.

    Parameters : | value : object The value to be printed.

  `return_error`(method, object, value)

    Raises a TraitError exception to notify the user that a method on an instance returned a value of incorrect type.

    Parameters : | method : function The method that encountered the error object : object The object whose method was called value : The value returned by the method

  `set`(object, name, value)
  `set_value`(object, name, value)

    Sets the cached value of a property-based trait and fires the appropriate trait change event.

  `validate`(object, name, value)

### `SEMLikeCommandLine`

class `nipype.interfaces.base.``SEMLikeCommandLine`(command=None, **inputs)

  Bases: `nipype.interfaces.base.CommandLine`

  By default in SEM derived interface all outputs have corresponding inputs. However, some SEM commands create outputs that are not defined in the XML. In those cases one has to create a subclass of the autogenerated one and overload the _list_outputs method. _outputs_from_inputs should still be used but only for the reduced (by excluding those that do not have corresponding inputs list of outputs.

  `__init__`(command=None, **inputs)
  `aggregate_outputs`(runtime=None, needed_outputs=None)

    Collate expected outputs and check for existence

  `always_run`
  `can_resume`
  `cmd`

    sets base command, immutable

  `cmdline`

    command plus any arguments (args) validates arguments and generates command line

  classmethod `help`(returnhelp=False)
  `input_spec`

    alias of `CommandLineInputSpec`

  `output_spec` = None
  `raise_exception`(runtime)
  `run`(**inputs)

    Execute this interface.

    This interface will not raise an exception if runtime.returncode is non-zero.

    Parameters : | inputs : allows the interface settings to be updated
    Returns : | results : an InterfaceResult object containing a copy of the instance that was executed, provenance information and, if successful, results :

  `version`
  `version_from_command`(flag='-v')

### `StdOutCommandLine`

class `nipype.interfaces.base.``StdOutCommandLine`(command=None, **inputs)

  Bases: `nipype.interfaces.base.CommandLine`

  `__init__`(command=None, **inputs)
  `aggregate_outputs`(runtime=None, needed_outputs=None)

    Collate expected outputs and check for existence

  `always_run`
  `can_resume`
  `cmd`

    sets base command, immutable

  `cmdline`

    command plus any arguments (args) validates arguments and generates command line

  classmethod `help`(returnhelp=False)
  `input_spec`

    alias of `StdOutCommandLineInputSpec`

  `output_spec` = None
  `raise_exception`(runtime)
  `run`(**inputs)

    Execute this interface.

    This interface will not raise an exception if runtime.returncode is non-zero.

    Parameters : | inputs : allows the interface settings to be updated
    Returns : | results : an InterfaceResult object containing a copy of the instance that was executed, provenance information and, if successful, results :

  `version`
  `version_from_command`(flag='-v')

### `StdOutCommandLineInputSpec`

class `nipype.interfaces.base.``StdOutCommandLineInputSpec`(**kwargs)

  Bases: `nipype.interfaces.base.CommandLineInputSpec`

  `__init__`(**kwargs)

    Initialize handlers and inputs

  classmethod `add_class_trait`(name, *trait)

    Adds a named trait attribute to this class.

    Parameters : | name : string Name of the attribute to add trait : a trait or a value that can be converted to a trait using Trait() Trait definition of the attribute. It can be a single value or a list equivalent to an argument list for the Trait() function

  `add_trait`(name, *trait)

    Adds a trait attribute to this object.

    Parameters : | name : string Name of the attribute to add trait : trait or a value that can be converted to a trait by Trait() Trait definition for name. If more than one value is specified, it is equivalent to passing the entire list of values to Trait().

  classmethod `add_trait_category`(category)

    Adds a trait category to a class.

  `add_trait_listener`(object, prefix='')
  `all_trait_names`()

    Returns the list of all trait names, including implicitly defined traits.

  `base_trait`(name)

    Returns the base trait definition for a trait attribute.

    Parameters : | name : string Name of the attribute whose trait definition is returned.

  classmethod `class_default_traits_view`()

    Returns the name of the default traits view for the class.

  classmethod `class_editable_traits`()

    Returns an alphabetically sorted list of the names of non-event trait attributes associated with the current class.

  classmethod `class_trait_names`(**metadata)

    Returns a list of the names of all trait attributes whose definitions match the set of metadata criteria specified.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  classmethod `class_trait_view`(name=None, view_element=None)
  classmethod `class_trait_view_elements`()

    Returns the ViewElements object associated with the class.

    The returned object can be used to access all the view elements associated with the class.

  classmethod `class_traits`(**metadata)

    Returns a dictionary containing the definitions of all of the trait attributes of the class that match the set of metadata criteria.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `clone_traits`(traits=None, memo=None, copy=None, **metadata)

    Clones a new object from this one, optionally copying only a specified set of traits.

    Parameters : | traits : list of strings The names of the trait attributes to copy. memo : dictionary A dictionary of objects that have already been copied. copy : None | ‘deep’ | ‘shallow’ The type of copy to perform on any trait that does not have explicit ‘copy’ metadata. A value of None means ‘copy reference’.
    Returns : | The newly cloned object. :

  `configure_traits`(filename=None, view=None, kind=None, edit=True, context=None, handler=None, id='', scrollable=None, **args)

    Creates and displays a dialog box for editing values of trait attributes, as if it were a complete, self-contained GUI application.

    Parameters : | filename : string The name (including path) of a file that contains a pickled representation of the current object. When this parameter is specified, the method reads the corresponding file (if it exists) to restore the saved values of the object’s traits before displaying them. If the user confirms the dialog box (by clicking OK), the new values are written to the file. If this parameter is not specified, the values are loaded from the in-memory object, and are not persisted when the dialog box is closed. view : view or string A View object (or its name) that defines a user interface for editing trait attribute values of the current object. If the view is defined as an attribute on this class, use the name of the attribute. Otherwise, use a reference to the view object. If this attribute is not specified, the View object returned by trait_view() is used. kind : string The type of user interface window to create. See the traitsui.view.kind_trait trait for values and their meanings. If kind is unspecified or None, the kind attribute of the View object is used. edit : Boolean Indicates whether to display a user interface. If filename specifies an existing file, setting edit to False loads the saved values from that file into the object without requiring user interaction. context : object or dictionary A single object or a dictionary of string/object pairs, whose trait attributes are to be edited. If not specified, the current object is used handler : Handler object A handler object used for event handling in the dialog box. If None, the default handler for Traits UI is used. id : string A unique ID for persisting preferences about this user interface, such as size and position. If not specified, no user preferences are saved. scrollable : Boolean Indicates whether the dialog box should be scrollable. When set to True, scroll bars appear on the dialog box if it is not large enough to display all of the items in the view at one time.

  `copy_traits`(other, traits=None, memo=None, copy=None, **metadata)

    Copies another object’s trait attributes into this one.

    Parameters : | other : object The object whose trait attribute values should be copied. traits : list of strings A list of names of trait attributes to copy. If None or unspecified, the set of names returned by trait_names() is used. If ‘all’ or an empty list, the set of names returned by all_trait_names() is used. memo : dictionary A dictionary of objects that have already been copied. copy : None | ‘deep’ | ‘shallow’ The type of copy to perform on any trait that does not have explicit ‘copy’ metadata. A value of None means ‘copy reference’.
    Returns : | A list of attributes that the method was unable to copy, : which is empty if all the attributes were successfully copied. :

  `copyable_trait_names`(**metadata)

    Returns the list of trait names to copy or clone by default.

  `default_traits_view`()

    Returns the name of the default traits view for the object’s class.

  `edit_traits`(view=None, parent=None, kind=None, context=None, handler=None, id='', scrollable=None, **args)

    Displays a user interface window for editing trait attribute values.

    Parameters : | view : view or string A View object (or its name) that defines a user interface for editing trait attribute values of the current object. If the view is defined as an attribute on this class, use the name of the attribute. Otherwise, use a reference to the view object. If this attribute is not specified, the View object returned by trait_view() is used. parent : window handle A user interface component to use as the parent window for the object’s UI window. kind : string The type of user interface window to create. See the traitsui.view.kind_trait trait for values and their meanings. If kind is unspecified or None, the kind attribute of the View object is used. context : object or dictionary A single object or a dictionary of string/object pairs, whose trait attributes are to be edited. If not specified, the current object is used. handler : Handler object A handler object used for event handling in the dialog box. If None, the default handler for Traits UI is used. id : string A unique ID for persisting preferences about this user interface, such as size and position. If not specified, no user preferences are saved. scrollable : Boolean Indicates whether the dialog box should be scrollable. When set to True, scroll bars appear on the dialog box if it is not large enough to display all of the items in the view at one time.

  `editable_traits`()

    Returns an alphabetically sorted list of the names of non-event trait attributes associated with the current object.

  `get`(**kwargs)

    Returns traited class as a dict

    Augments the trait get function to return a dictionary without notification handles

  `get_hashval`(hash_method=None)

    Return a dictionary of our items with hashes for each file.

    Searches through dictionary items and if an item is a file, it calculates the md5 hash of the file contents and stores the file name and hash value as the new key value.

    However, the overall bunch hash is calculated only on the hash value of a file. The path and name of the file are not used in the overall hash calculation.

    Returns : | dict_withhash : dict Copy of our dictionary with the new file hashes included with each file. hashvalue : str The md5 hash value of the traited spec

  `get_traitsfree`(**kwargs)

    Returns traited class as a dict

    Augments the trait get function to return a dictionary without any traits. The dictionary does not contain any attributes that were Undefined

  `has_traits_interface`(*interfaces)

    Returns whether the object implements a specified traits interface.

    Parameters : | interfaces : one or more traits Interface (sub)classes.

  `items`()

    Name, trait generator for user modifiable traits

  `on_trait_change`(handler, name=None, remove=False, dispatch='same', priority=False, deferred=False, target=None)

    Causes the object to invoke a handler whenever a trait attribute matching a specified pattern is modified, or removes the association.

    Parameters : | handler : function A trait notification function for the name trait attribute, with one of the signatures described below. name : string The name of the trait attribute whose value changes trigger the notification. The name can specify complex patterns of trait changes using an extended name syntax, which is described below. remove : Boolean If True, removes the previously-set association between handler and name; if False (the default), creates the association. dispatch : string A string indicating the thread on which notifications must be run. Possible values are: ‘same’: Run notifications on the same thread as this one. ‘ui’: Run notifications on the UI thread, and allow them to be queued and deferred. ‘fast_ui’: Run notifications on the UI thread, and process them immediately. ‘new’: Run notifications in a new thread.

  `on_trait_event`(handler, name=None, remove=False, dispatch='same', priority=False, deferred=False, target=None)

    Causes the object to invoke a handler whenever a trait attribute matching a specified pattern is modified, or removes the association.

    Parameters : | handler : function A trait notification function for the name trait attribute, with one of the signatures described below. name : string The name of the trait attribute whose value changes trigger the notification. The name can specify complex patterns of trait changes using an extended name syntax, which is described below. remove : Boolean If True, removes the previously-set association between handler and name; if False (the default), creates the association. dispatch : string A string indicating the thread on which notifications must be run. Possible values are: ‘same’: Run notifications on the same thread as this one. ‘ui’: Run notifications on the UI thread, and allow them to be queued and deferred. ‘fast_ui’: Run notifications on the UI thread, and process them immediately. ‘new’: Run notifications in a new thread.

  `print_traits`(show_help=False, **metadata)

    Prints the values of all explicitly-defined, non-event trait attributes on the current object, in an easily readable format.

    Parameters : | show_help : Boolean Indicates whether to display additional descriptive information.

  `remove_trait`(name)

    Removes a trait attribute from this object.

    Parameters : | name : string Name of the attribute to remove

  `remove_trait_listener`(object, prefix='')
  `reset_traits`(traits=None, **metadata)

    Resets some or all of an object’s trait attributes to their default values.

    Parameters : | traits : list of strings Names of trait attributes to reset
    Returns : | A list of attributes that the method was unable to reset, which is empty : if all the attributes were successfully reset. :

  `set`(trait_change_notify=True, **traits)

    Shortcut for setting object trait attributes.

    Parameters : | trait_change_notify : Boolean If True (the default), then each value assigned may generate a trait change notification. If False, then no trait change notifications will be generated. (see also: trait_setq) traits : list of key/value pairs Trait attributes and their values to be set
    Returns : | self : The method returns this object, after setting attributes.

  classmethod `set_trait_dispatch_handler`(name, klass, override=False)

    Sets a trait notification dispatch handler.

  `sync_trait`(trait_name, object, alias=None, mutual=True, remove=False)

    Synchronizes the value of a trait attribute on this object with a trait attribute on another object.

    Parameters : | name : string Name of the trait attribute on this object object : object The object with which to synchronize alias : string Name of the trait attribute on other; if None or omitted, same as name. mutual : Boolean or integer Indicates whether synchronization is mutual (True or non-zero) or one-way (False or zero) remove : Boolean or integer Indicates whether sychronization is being added (False or zero) or removed (True or non-zero)

  `trait`(name, force=False, copy=False)

    Returns the trait definition for the name trait attribute.

    Parameters : | name : string Name of the attribute whose trait definition is to be returned force : Boolean Indicates whether to return a trait definition if name is not explicitly defined copy : Boolean Indicates whether to return the original trait definition or a copy

  `trait_context`()

    Returns the default context to use for editing or configuring traits.

  `trait_get`(*names, **metadata)

    Shortcut for getting object trait attributes.

    Parameters : | names : list of trait attribute names Trait attributes whose values are requested
    Returns : | A dictionary whose keys are the names passed as arguments and whose : values are the corresponding trait values :

  `trait_items_event`(event_trait, name, items_event)
  classmethod `trait_monitor`(handler, remove=False)

    Adds or removes the specified handler from the list of active monitors.

    Parameters : | handler : function The function to add or remove as a monitor. remove : boolean Flag indicating whether to remove (True) or add the specified handler as a monitor for this class.

  `trait_names`(**metadata)

    Returns a list of the names of all trait attributes whose definitions match the set of metadata criteria specified.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `trait_property_changed`(name, old_value[, new_value])
  `trait_set`(trait_change_notify=True, **traits)

    Shortcut for setting object trait attributes.

    Parameters : | trait_change_notify : Boolean If True (the default), then each value assigned may generate a trait change notification. If False, then no trait change notifications will be generated. (see also: trait_setq) traits : list of key/value pairs Trait attributes and their values to be set
    Returns : | self : The method returns this object, after setting attributes.

  `trait_setq`(**traits)

    Shortcut for setting object trait attributes.

    Parameters : | traits : list of key/value pairs Trait attributes and their values to be set. No trait change notifications will be generated for any values assigned (see also: trait_set).
    Returns : | self : The method returns this object, after setting attributes.

  classmethod `trait_subclasses`(all=False)

    Returns a list of the immediate (or all) subclasses of this class.

    Parameters : | all : Boolean Indicates whether to return all subclasses of this class. If False, only immediate subclasses are returned.

  `trait_view`(name=None, view_element=None)

    Gets or sets a ViewElement associated with an object’s class.

    Parameters : | name : string Name of a view element view_element : a ViewElement object View element to associate
    Returns : | A view element. :

  `trait_view_elements`()

    Returns the ViewElements object associated with the object’s class.

    The returned object can be used to access all the view elements associated with the class.

  `trait_views`(klass=None)

    Returns a list of the names of all view elements associated with the current object’s class.

    Parameters : | klass : a class A class, such that all returned names must correspond to instances of this class. Possible values include: Group Item View ViewElement ViewSubElement

  `traits`(**metadata)

    Returns a dictionary containing the definitions of all of the trait attributes of this object that match the set of metadata criteria.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `traits_init`()
  `traits_inited`([True])
  `validate_trait`(name, value)

    Validates whether a value is legal for a trait.

    Returns the validated value if it is valid.

  `wrappers` = {'new': <class traits.trait_notifiers.NewTraitChangeNotifyWrapper at 0x37947a0>, 'ui': <class traits.trait_notifiers.FastUITraitChangeNotifyWrapper at 0x37946d0>, 'extended': <class traits.trait_notifiers.ExtendedTraitChangeNotifyWrapper at 0x3794668>, 'fast_ui': <class traits.trait_notifiers.FastUITraitChangeNotifyWrapper at 0x37946d0>, 'same': <class traits.trait_notifiers.TraitChangeNotifyWrapper at 0x3794600>}

### `Stream`

class `nipype.interfaces.base.``Stream`(name, impl)

  Bases: `object`

  Function to capture stdout and stderr streams with timestamps

  http://stackoverflow.com/questions/4984549/merge-and-sync-stdout-and-stderr/5188359#5188359

  `__init__`(name, impl)
  `fileno`()

    Pass-through for file descriptor.

  `read`(drain=0)

    Read from the file descriptor. If ‘drain’ set, read until EOF.

### `TraitedSpec`

class `nipype.interfaces.base.``TraitedSpec`(**kwargs)

  Bases: `nipype.interfaces.base.BaseTraitedSpec`

  Create a subclass with strict traits.

  This is used in 90% of the cases.

  `__init__`(**kwargs)

    Initialize handlers and inputs

  classmethod `add_class_trait`(name, *trait)

    Adds a named trait attribute to this class.

    Parameters : | name : string Name of the attribute to add trait : a trait or a value that can be converted to a trait using Trait() Trait definition of the attribute. It can be a single value or a list equivalent to an argument list for the Trait() function

  `add_trait`(name, *trait)

    Adds a trait attribute to this object.

    Parameters : | name : string Name of the attribute to add trait : trait or a value that can be converted to a trait by Trait() Trait definition for name. If more than one value is specified, it is equivalent to passing the entire list of values to Trait().

  classmethod `add_trait_category`(category)

    Adds a trait category to a class.

  `add_trait_listener`(object, prefix='')
  `all_trait_names`()

    Returns the list of all trait names, including implicitly defined traits.

  `base_trait`(name)

    Returns the base trait definition for a trait attribute.

    Parameters : | name : string Name of the attribute whose trait definition is returned.

  classmethod `class_default_traits_view`()

    Returns the name of the default traits view for the class.

  classmethod `class_editable_traits`()

    Returns an alphabetically sorted list of the names of non-event trait attributes associated with the current class.

  classmethod `class_trait_names`(**metadata)

    Returns a list of the names of all trait attributes whose definitions match the set of metadata criteria specified.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  classmethod `class_trait_view`(name=None, view_element=None)
  classmethod `class_trait_view_elements`()

    Returns the ViewElements object associated with the class.

    The returned object can be used to access all the view elements associated with the class.

  classmethod `class_traits`(**metadata)

    Returns a dictionary containing the definitions of all of the trait attributes of the class that match the set of metadata criteria.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `clone_traits`(traits=None, memo=None, copy=None, **metadata)

    Clones a new object from this one, optionally copying only a specified set of traits.

    Parameters : | traits : list of strings The names of the trait attributes to copy. memo : dictionary A dictionary of objects that have already been copied. copy : None | ‘deep’ | ‘shallow’ The type of copy to perform on any trait that does not have explicit ‘copy’ metadata. A value of None means ‘copy reference’.
    Returns : | The newly cloned object. :

  `configure_traits`(filename=None, view=None, kind=None, edit=True, context=None, handler=None, id='', scrollable=None, **args)

    Creates and displays a dialog box for editing values of trait attributes, as if it were a complete, self-contained GUI application.

    Parameters : | filename : string The name (including path) of a file that contains a pickled representation of the current object. When this parameter is specified, the method reads the corresponding file (if it exists) to restore the saved values of the object’s traits before displaying them. If the user confirms the dialog box (by clicking OK), the new values are written to the file. If this parameter is not specified, the values are loaded from the in-memory object, and are not persisted when the dialog box is closed. view : view or string A View object (or its name) that defines a user interface for editing trait attribute values of the current object. If the view is defined as an attribute on this class, use the name of the attribute. Otherwise, use a reference to the view object. If this attribute is not specified, the View object returned by trait_view() is used. kind : string The type of user interface window to create. See the traitsui.view.kind_trait trait for values and their meanings. If kind is unspecified or None, the kind attribute of the View object is used. edit : Boolean Indicates whether to display a user interface. If filename specifies an existing file, setting edit to False loads the saved values from that file into the object without requiring user interaction. context : object or dictionary A single object or a dictionary of string/object pairs, whose trait attributes are to be edited. If not specified, the current object is used handler : Handler object A handler object used for event handling in the dialog box. If None, the default handler for Traits UI is used. id : string A unique ID for persisting preferences about this user interface, such as size and position. If not specified, no user preferences are saved. scrollable : Boolean Indicates whether the dialog box should be scrollable. When set to True, scroll bars appear on the dialog box if it is not large enough to display all of the items in the view at one time.

  `copy_traits`(other, traits=None, memo=None, copy=None, **metadata)

    Copies another object’s trait attributes into this one.

    Parameters : | other : object The object whose trait attribute values should be copied. traits : list of strings A list of names of trait attributes to copy. If None or unspecified, the set of names returned by trait_names() is used. If ‘all’ or an empty list, the set of names returned by all_trait_names() is used. memo : dictionary A dictionary of objects that have already been copied. copy : None | ‘deep’ | ‘shallow’ The type of copy to perform on any trait that does not have explicit ‘copy’ metadata. A value of None means ‘copy reference’.
    Returns : | A list of attributes that the method was unable to copy, : which is empty if all the attributes were successfully copied. :

  `copyable_trait_names`(**metadata)

    Returns the list of trait names to copy or clone by default.

  `default_traits_view`()

    Returns the name of the default traits view for the object’s class.

  `edit_traits`(view=None, parent=None, kind=None, context=None, handler=None, id='', scrollable=None, **args)

    Displays a user interface window for editing trait attribute values.

    Parameters : | view : view or string A View object (or its name) that defines a user interface for editing trait attribute values of the current object. If the view is defined as an attribute on this class, use the name of the attribute. Otherwise, use a reference to the view object. If this attribute is not specified, the View object returned by trait_view() is used. parent : window handle A user interface component to use as the parent window for the object’s UI window. kind : string The type of user interface window to create. See the traitsui.view.kind_trait trait for values and their meanings. If kind is unspecified or None, the kind attribute of the View object is used. context : object or dictionary A single object or a dictionary of string/object pairs, whose trait attributes are to be edited. If not specified, the current object is used. handler : Handler object A handler object used for event handling in the dialog box. If None, the default handler for Traits UI is used. id : string A unique ID for persisting preferences about this user interface, such as size and position. If not specified, no user preferences are saved. scrollable : Boolean Indicates whether the dialog box should be scrollable. When set to True, scroll bars appear on the dialog box if it is not large enough to display all of the items in the view at one time.

  `editable_traits`()

    Returns an alphabetically sorted list of the names of non-event trait attributes associated with the current object.

  `get`(**kwargs)

    Returns traited class as a dict

    Augments the trait get function to return a dictionary without notification handles

  `get_hashval`(hash_method=None)

    Return a dictionary of our items with hashes for each file.

    Searches through dictionary items and if an item is a file, it calculates the md5 hash of the file contents and stores the file name and hash value as the new key value.

    However, the overall bunch hash is calculated only on the hash value of a file. The path and name of the file are not used in the overall hash calculation.

    Returns : | dict_withhash : dict Copy of our dictionary with the new file hashes included with each file. hashvalue : str The md5 hash value of the traited spec

  `get_traitsfree`(**kwargs)

    Returns traited class as a dict

    Augments the trait get function to return a dictionary without any traits. The dictionary does not contain any attributes that were Undefined

  `has_traits_interface`(*interfaces)

    Returns whether the object implements a specified traits interface.

    Parameters : | interfaces : one or more traits Interface (sub)classes.

  `items`()

    Name, trait generator for user modifiable traits

  `on_trait_change`(handler, name=None, remove=False, dispatch='same', priority=False, deferred=False, target=None)

    Causes the object to invoke a handler whenever a trait attribute matching a specified pattern is modified, or removes the association.

    Parameters : | handler : function A trait notification function for the name trait attribute, with one of the signatures described below. name : string The name of the trait attribute whose value changes trigger the notification. The name can specify complex patterns of trait changes using an extended name syntax, which is described below. remove : Boolean If True, removes the previously-set association between handler and name; if False (the default), creates the association. dispatch : string A string indicating the thread on which notifications must be run. Possible values are: ‘same’: Run notifications on the same thread as this one. ‘ui’: Run notifications on the UI thread, and allow them to be queued and deferred. ‘fast_ui’: Run notifications on the UI thread, and process them immediately. ‘new’: Run notifications in a new thread.

  `on_trait_event`(handler, name=None, remove=False, dispatch='same', priority=False, deferred=False, target=None)

    Causes the object to invoke a handler whenever a trait attribute matching a specified pattern is modified, or removes the association.

    Parameters : | handler : function A trait notification function for the name trait attribute, with one of the signatures described below. name : string The name of the trait attribute whose value changes trigger the notification. The name can specify complex patterns of trait changes using an extended name syntax, which is described below. remove : Boolean If True, removes the previously-set association between handler and name; if False (the default), creates the association. dispatch : string A string indicating the thread on which notifications must be run. Possible values are: ‘same’: Run notifications on the same thread as this one. ‘ui’: Run notifications on the UI thread, and allow them to be queued and deferred. ‘fast_ui’: Run notifications on the UI thread, and process them immediately. ‘new’: Run notifications in a new thread.

  `print_traits`(show_help=False, **metadata)

    Prints the values of all explicitly-defined, non-event trait attributes on the current object, in an easily readable format.

    Parameters : | show_help : Boolean Indicates whether to display additional descriptive information.

  `remove_trait`(name)

    Removes a trait attribute from this object.

    Parameters : | name : string Name of the attribute to remove

  `remove_trait_listener`(object, prefix='')
  `reset_traits`(traits=None, **metadata)

    Resets some or all of an object’s trait attributes to their default values.

    Parameters : | traits : list of strings Names of trait attributes to reset
    Returns : | A list of attributes that the method was unable to reset, which is empty : if all the attributes were successfully reset. :

  `set`(trait_change_notify=True, **traits)

    Shortcut for setting object trait attributes.

    Parameters : | trait_change_notify : Boolean If True (the default), then each value assigned may generate a trait change notification. If False, then no trait change notifications will be generated. (see also: trait_setq) traits : list of key/value pairs Trait attributes and their values to be set
    Returns : | self : The method returns this object, after setting attributes.

  classmethod `set_trait_dispatch_handler`(name, klass, override=False)

    Sets a trait notification dispatch handler.

  `sync_trait`(trait_name, object, alias=None, mutual=True, remove=False)

    Synchronizes the value of a trait attribute on this object with a trait attribute on another object.

    Parameters : | name : string Name of the trait attribute on this object object : object The object with which to synchronize alias : string Name of the trait attribute on other; if None or omitted, same as name. mutual : Boolean or integer Indicates whether synchronization is mutual (True or non-zero) or one-way (False or zero) remove : Boolean or integer Indicates whether sychronization is being added (False or zero) or removed (True or non-zero)

  `trait`(name, force=False, copy=False)

    Returns the trait definition for the name trait attribute.

    Parameters : | name : string Name of the attribute whose trait definition is to be returned force : Boolean Indicates whether to return a trait definition if name is not explicitly defined copy : Boolean Indicates whether to return the original trait definition or a copy

  `trait_context`()

    Returns the default context to use for editing or configuring traits.

  `trait_get`(*names, **metadata)

    Shortcut for getting object trait attributes.

    Parameters : | names : list of trait attribute names Trait attributes whose values are requested
    Returns : | A dictionary whose keys are the names passed as arguments and whose : values are the corresponding trait values :

  `trait_items_event`(event_trait, name, items_event)
  classmethod `trait_monitor`(handler, remove=False)

    Adds or removes the specified handler from the list of active monitors.

    Parameters : | handler : function The function to add or remove as a monitor. remove : boolean Flag indicating whether to remove (True) or add the specified handler as a monitor for this class.

  `trait_names`(**metadata)

    Returns a list of the names of all trait attributes whose definitions match the set of metadata criteria specified.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `trait_property_changed`(name, old_value[, new_value])
  `trait_set`(trait_change_notify=True, **traits)

    Shortcut for setting object trait attributes.

    Parameters : | trait_change_notify : Boolean If True (the default), then each value assigned may generate a trait change notification. If False, then no trait change notifications will be generated. (see also: trait_setq) traits : list of key/value pairs Trait attributes and their values to be set
    Returns : | self : The method returns this object, after setting attributes.

  `trait_setq`(**traits)

    Shortcut for setting object trait attributes.

    Parameters : | traits : list of key/value pairs Trait attributes and their values to be set. No trait change notifications will be generated for any values assigned (see also: trait_set).
    Returns : | self : The method returns this object, after setting attributes.

  classmethod `trait_subclasses`(all=False)

    Returns a list of the immediate (or all) subclasses of this class.

    Parameters : | all : Boolean Indicates whether to return all subclasses of this class. If False, only immediate subclasses are returned.

  `trait_view`(name=None, view_element=None)

    Gets or sets a ViewElement associated with an object’s class.

    Parameters : | name : string Name of a view element view_element : a ViewElement object View element to associate
    Returns : | A view element. :

  `trait_view_elements`()

    Returns the ViewElements object associated with the object’s class.

    The returned object can be used to access all the view elements associated with the class.

  `trait_views`(klass=None)

    Returns a list of the names of all view elements associated with the current object’s class.

    Parameters : | klass : a class A class, such that all returned names must correspond to instances of this class. Possible values include: Group Item View ViewElement ViewSubElement

  `traits`(**metadata)

    Returns a dictionary containing the definitions of all of the trait attributes of this object that match the set of metadata criteria.

    Parameters : | metadata : dictionary Criteria for selecting trait attributes

  `traits_init`()
  `traits_inited`([True])
  `validate_trait`(name, value)

    Validates whether a value is legal for a trait.

    Returns the validated value if it is valid.

  `wrappers` = {'new': <class traits.trait_notifiers.NewTraitChangeNotifyWrapper at 0x37947a0>, 'ui': <class traits.trait_notifiers.FastUITraitChangeNotifyWrapper at 0x37946d0>, 'extended': <class traits.trait_notifiers.ExtendedTraitChangeNotifyWrapper at 0x3794668>, 'fast_ui': <class traits.trait_notifiers.FastUITraitChangeNotifyWrapper at 0x37946d0>, 'same': <class traits.trait_notifiers.TraitChangeNotifyWrapper at 0x3794600>}

## Functions

`nipype.interfaces.base.``load_template`(name)

  Load a template from the script_templates directory

  Parameters : | name : str The name of the file to load
  Returns : | template : string.Template

`nipype.interfaces.base.``run_command`(runtime, timeout=0.01)

  Run a command, read stdout and stderr, prefix with timestamp. The returned runtime contains a merged stdout+stderr log with timestamps

  http://stackoverflow.com/questions/4984549/merge-and-sync-stdout-and-stderr/5188359#5188359