What are the pros and cons of the various Python implementations?
<p>I am relatively new to Python, and I have always used the standard cpython (v2.5) implementation.  </p>

<p>I've been wondering about the other implementations though, particularly Jython and IronPython.  What makes them better?  What makes them worse?  What other implementations are there?</p>

<p>I guess what I'm looking for is a summary and list of pros and cons for each implementation.</p>
