Run command and return its return code and its output.

>>> run_cmd('/bin/true')
(0, '')

Returns True if command exited normally, False otherwise.

>>> command_successful('/bin/true')
True
>>> command_successful('this-command-doesnt-exist')
False

Pad text with dots up to given length.

>>> pad_with_dots("Hello world", 20)
'Hello world ........'
>>> pad_with_dots("Exceeding length", 10)
'Exceeding length'

Pad value with spaces at left up to given length.

>>> pad_left_spaces(15, 4)
'  15'
>>> pad_left_spaces(123456, 2)
'123456'
>>> len(pad_left_spaces("")) == PAD_VALUE
True

Pad value with spaces at left up to given length.

>>> pad_right_spaces(123, 5)
'123  '
>>> pad_right_spaces(12.1, 5)
'12.1 '

Pad message with dots and pad value with spaces.

>>> pad_msg("123456", 77, msg_length=10, value_length=4)
'123456 ...  77'
>>> pad_msg("123", u"45", msg_length=5, value_length=3)
u'123 . 45'

Return line consisting of 'char' characters.

>>> pad_line('*', 3)
'***'
>>> pad_line(length=10)
'=========='

Unzip given package to the destination directory.

Return name of unpacked directory or None on error.

Untar given package to the destination directory.

Return name of unpacked directory or None on error.

Unpack given egg to the destination directory.

Return name of unpacked directory or None on error.

Make directory with parent directories as needed.

Don't throw an exception if directory exists.

Measure function execution time.

Return (return value, time taken) tuple.

>>> def fun(x):
...     return x*2
>>> ret, time_taken = time_function(lambda: fun(5))
>>> ret
10