Difference between Python 2.2.2 and Python 2.5

[Ravi]

On Jan 18, 8:44 pm, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> On Sun, 18 Jan 2009 07:30:52 -0800, Ravi wrote:
> > I am developing for PyS60 1.4.4 which supports Python 2.2.2 while what I
> > know is Python 2.5  .
>
> > Can you please tell me differences between the two so that I can save
> > myself from incompatible code.
>
> Everything new mentioned here:
>
> http://www.python.org/doc/2.5/whatsnew/whatsnew25.htmlhttp://www.python.org/doc/2.4/whatsnew/whatsnew24.htmlhttp://www.python.org/doc/2.3/whatsnew/whatsnew23.html
>
> won't exist in Python 2.2.
>
> --
> Steven

This is a list too big!

Is there any checker which can be applied to the Python code.
(of course any solution other than running python 2.2 over the code)