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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def create_binary_buffer(init_or_size):
 """ ctypes.create_string_buffer variant which does not add a trailing null when init_or_size is not a size. """

    # As per ctypes.create_string_buffer, as of python 2.7.10 at least:
    # - int or long is a length
    # - str or unicode is an initialiser
    # Testing the latter confuses 2to3, so test the former.
    if isinstance(init_or_size, (int, long)):
        init_or_size = bytearray(init_or_size)
    return create_initialised_buffer(init_or_size)