whatstyle.py 文件源码

def sysfilename(filename):
    # type: (Union[str, bytes]) -> bytes
    if not isinstance(filename, text_type):
        return filename
    try:
        return filename.encode(sys.getfilesystemencoding())
    except UnicodeEncodeError:
        try:
            return filename.encode('utf-8')
        except UnicodeEncodeError:
            if HAS_FSCODEC:
                return os.fsencode(filename)
            else:
                raise