Package paramiko :: Class BufferedFile |
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# Class BufferedFile

source code

    object --+
             |
            BufferedFile

Known Subclasses:
  - ChannelFile
  - , SFTPFile

Reusable base class to implement python-style file buffering around a simpler stream.

Instance Methods
__del__(self) | source code
__init__(self) x.__init__(...) initializes x; see x.__class__.__doc__ for signature | source code
iterator |
__iter__(self) Returns an iterator that can be used to iterate over the lines in this file. | source code
close(self) Close the file. | source code
flush(self) Write out any data in the write buffer. | source code
str |
next(self) Returns the next line from the input, or raises `StopIteration` when EOF is hit. | source code
str |
read(self, size=None) Read at most `size` bytes from the file (less if we hit the end of the file first). | source code
str |
readline(self, size=None) Read one entire line from the file. | source code
list |
readlines(self, sizehint=None) Read all remaining lines using readline and return them as a list. | source code
seek(self, offset, whence=0) Set the file's current position, like stdio's `fseek`. | source code
int |
tell(self) Return the file's current position. | source code
write(self, data) Write data to the file. | source code
writelines(self, sequence) Write a sequence of strings to the file. | source code
iterator |
xreadlines(self) Identical to `iter(f)`. | source code
Inherited from `object`: `__delattr__`, `__format__`, `__getattribute__`, `__hash__`, `__new__`, `__reduce__`, `__reduce_ex__`, `__repr__`, `__setattr__`, `__sizeof__`, `__str__`, `__subclasshook__`

Class Variables
| FLAG_APPEND = `4`
| FLAG_BINARY = `16`
| FLAG_BUFFERED = `32`
| FLAG_LINE_BUFFERED = `64`
| FLAG_READ = `1`
| FLAG_UNIVERSAL_NEWLINE = `128`
| FLAG_WRITE = `2`
| SEEK_CUR = `1`
| SEEK_END = `2`
| SEEK_SET = `0`

Properties
Inherited from `object`: `__class__`

Method Details

### __init__(self) (Constructor) | source code
x.__init__(...) initializes x; see x.__class__.__doc__ for signature Overrides: object.__init__ (inherited documentation)

### __iter__(self) | source code
Returns an iterator that can be used to iterate over the lines in this file. This iterator happens to return the file itself, since a file is its own iterator. Returns: iterator an interator. Raises: `ValueError` - if the file is closed.

### close(self) | source code
Close the file. Future read and write operations will fail.

### flush(self) | source code
Write out any data in the write buffer. This may do nothing if write buffering is not turned on.

### next(self) | source code
Returns the next line from the input, or raises `StopIteration` when EOF is hit. Unlike python file objects, it's okay to mix calls to `next` and readline. Returns: str a line read from the file. Raises: `StopIteration` - when the end of the file is reached.

### read(self, size=None) | source code
Read at most `size` bytes from the file (less if we hit the end of the file first). If the `size` argument is negative or omitted, read all the remaining data in the file. Parameters: `size` (int) - maximum number of bytes to read Returns: str data read from the file, or an empty string if EOF was encountered immediately

### readline(self, size=None) | source code
Read one entire line from the file. A trailing newline character is kept in the string (but may be absent when a file ends with an incomplete line). If the size argument is present and non-negative, it is a maximum byte count (including the trailing newline) and an incomplete line may be returned. An empty string is returned only when EOF is encountered immediately. Parameters: `size` (int) - maximum length of returned string. Returns: str next line of the file, or an empty string if the end of the file has been reached. Note: Unlike stdio's `fgets()`, the returned string contains null characters (`'\0'`) if they occurred in the input.

### readlines(self, sizehint=None) | source code
Read all remaining lines using readline and return them as a list. If the optional `sizehint` argument is present, instead of reading up to EOF, whole lines totalling approximately sizehint bytes (possibly after rounding up to an internal buffer size) are read. Parameters: `sizehint` (int) - desired maximum number of bytes to read. Returns: list list of lines read from the file.

### seek(self, offset, whence=0) | source code
Set the file's current position, like stdio's `fseek`. Not all file objects support seeking. Parameters: `offset` (int) - position to move to within the file, relative to `whence`. `whence` (int) - type of movement: 0 = absolute; 1 = relative to the current position; 2 = relative to the end of the file. Raises: `IOError` - if the file doesn't support random access. Note: If a file is opened in append mode (`'a'` or `'a+'`), any seek operations will be undone at the next write (as the file position will move back to the end of the file).

### tell(self) | source code
Return the file's current position. This may not be accurate or useful if the underlying file doesn't support random access, or was opened in append mode. Returns: int file position (in bytes).

### write(self, data) | source code
Write data to the file. If write buffering is on (`bufsize` was specified and non-zero), some or all of the data may not actually be written yet. (Use flush or close to force buffered data to be written out.) Parameters: `data` (str) - data to write.

### writelines(self, sequence) | source code
Write a sequence of strings to the file. The sequence can be any iterable object producing strings, typically a list of strings. (The name is intended to match readlines; `writelines` does not add line separators.) Parameters: `sequence` (sequence) - an iterable sequence of strings.

### xreadlines(self) | source code
Identical to `iter(f)`. This is a deprecated file interface that predates python iterator support. Returns: iterator an iterator.