How to use 'open mat file in python' in Python

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def _open_file(file_like, appendmat):
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    ''' Open `file_like` and return as file-like object '''
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    if isinstance(file_like, basestring):
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        try:
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            return open(file_like, 'rb')
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        except IOError:
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            pass
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        if appendmat and not file_like.endswith('.mat'):
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            try:
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                return open(file_like + '.mat', 'rb')
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            except IOError:
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                pass
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        # search the python path - we'll remove this soon
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        full_name = find_mat_file(file_like, appendmat)
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        if full_name is None:
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            raise IOError("%s not found on the path."
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                          % file_like)
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        return open(full_name, 'rb')
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    # not a string - maybe file-like object
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    try:
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        file_like.read(0)
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    except AttributeError:
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        raise IOError('Reader needs file name or open file-like object')
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    return file_like

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def loadmat(file_name,  mdict=None, appendmat=True, basename='raw', **kwargs):
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    ''' Load Matlab(tm) file
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    file_name          - Name of the mat file
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                         (do not need .mat extension if appendmat==True)
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                         If name not a full path name, search for the file on
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                         the sys.path list and use the first one found (the
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                         current directory is searched first).
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                         Can also pass open file-like object
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    m_dict             - optional dictionary in which to insert matfile variables
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    appendmat          - True to append the .mat extension to the end of the
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                         given filename, if not already present
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    base_name          - base name for unnamed variables (unused in code)
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    byte_order         - byte order ('native', 'little', 'BIG')
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                          in ('native', '=')
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                          or in ('little', '<')
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                          or in ('BIG', '>')
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    mat_dtype          - return arrays in same dtype as loaded into matlab
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                          (instead of the dtype with which they are saved)
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    squeeze_me         - whether to squeeze matrix dimensions or not
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    chars_as_strings   - whether to convert char arrays to string arrays
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    mat_dtype          - return matrices with datatype that matlab would load as
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                          (rather than in the datatype matlab saves as)
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    matlab_compatible   - returns matrices as would be loaded by matlab
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                          (implies squeeze_me=False, chars_as_strings=False,
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                          mat_dtype=True)
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    v4 (Level 1.0), v6 and v7.1 matfiles are supported.
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    '''
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    MR = mat_reader_factory(file_name, appendmat, **kwargs)
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    matfile_dict = MR.get_variables()
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    if mdict is not None:
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        mdict.update(matfile_dict)
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    else:
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        mdict = matfile_dict
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    return mdict