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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 filesys_decode(path):
 """ Ensure that the given path is decoded, NONE when no expected encoding works """


    if isinstance(path, six.text_type):
        return path

    fs_enc = sys.getfilesystemencoding() or 'utf-8'
    candidates = fs_enc, 'utf-8'

    for enc in candidates:
        try:
            return path.decode(enc)
        except UnicodeDecodeError:
            continue