Cython is a reification of the interpretation of a python program. Ie it converts the python code into the equivalent CPython API calls (which are all in C) the

Cython is a reification of the interpretation of a python program. Ie it converts the python code into the equivalent CPython API calls (which are all in C) thereby allowing the developer to interperse real C code. Anything you could do in python you could technically do in Cython, although it would be much more verbose.