""" Python 'undefined' Codec     This codec will always raise a ValueError exception when being    used. It is intended for use by the site.py file to switch off    automatic string to Unicode coercion. Written by Marc-Andre Lemburg (mal@lemburg.com). (c) Copyright CNRI, All Rights Reserved. NO WARRANTY. """import codecs ### Codec APIs class Codec(codecs.Codec):     def encode(self,input,errors='strict'):        raise UnicodeError("undefined encoding")     def decode(self,input,errors='strict'):        raise UnicodeError("undefined encoding") class IncrementalEncoder(codecs.IncrementalEncoder):    def encode(self, input, final=False):        raise UnicodeError("undefined encoding") class IncrementalDecoder(codecs.IncrementalDecoder):    def decode(self, input, final=False):        raise UnicodeError("undefined encoding") class StreamWriter(Codec,codecs.StreamWriter):    pass class StreamReader(Codec,codecs.StreamReader):    pass ### encodings module API def getregentry():    return codecs.CodecInfo(        name='undefined',        encode=Codec().encode,        decode=Codec().decode,        incrementalencoder=IncrementalEncoder,        incrementaldecoder=IncrementalDecoder,        streamwriter=StreamWriter,        streamreader=StreamReader,    )