Should I use Pickle or cPickle?
Question: Python has both the `pickle` and `cPickle` modules for serialization.

`cPickle` has an obvious advantage over `pickle`: speed. Does `pickle` have
any advantages? If not, should I simply use `cPickle` always?


Answer: The **pickle** module implements an algorithm for turning an arbitrary
**Python** object into a series of bytes. This process is also called
serializing” the object. The byte stream representing the object can then be
transmitted or stored, and later reconstructed to create a new object with the
same characteristics.

The **cPickle** module implements the same algorithm, in **C** instead of
Python. It is many times faster than the Python implementation, but does not
allow the user to subclass from Pickle. If subclassing is not important for
your use, you probably want to use cPickle.

[Source](https://pymotw.com/2/pickle/) of above information.

