The cPickle module provides a similar interface and identical
functionality as the pickle
The format of the pickle data is identical to that produced using the pickle module, so it is possible to use pickle and cPickle interchangably with existing pickles.
(Since the pickle data format is actually a tiny stack-oriented programming language, and there are some freedoms in the encodings of certain objects, it's possible that the two modules produce different pickled data for the same input objects; however they will always be able to read each others pickles back in.)