Speed
=====

CPython, the most commonly used implementation of Python, is slow for CPU bound tasks. `PyPy`_ is fast.

.. todo:: Fill in stub for Speed comparisons

Context
:::::::


The GIL
-------



C Extentions
------------


The GIL
-------




C Extentions
::::::::::::


Cython
------


Pyrex
-----


Shedskin?
---------



Threading
:::::::::


Threading
---------


Spanwing Processes
------------------


Multiprocessing
---------------


.. _`PyPy`: http://pypy.org