Re: Let's make a plan for python3.0 in Fedora 10+

[Tim Lauridsen <tim lauridsen googlemail com>]

Matej Cepl wrote:
> On 2008-06-12, 09:16 GMT, Tim Lauridsen wrote:
> > also see the potential upgrade nightmare a switch to a non 
> > backwards compatibility version of python and for anaconda 
>
> Am I totally wrong when I think that 2.6 should be 100% backward 
> compatible with 2.5 (unless explicitly requested in the python 
> script itself and even then it should just emit 
> DepreceatedWarnings)?
>
> Matěj

Python will contain some forward 3.0 compability, i have not read any 
thing about 100% backwards compatibility.

http://www.python.org/dev/peps/pep-3000/

but even if it is, then you will have to do a

a python 2.5 to python 2.6 with (__future__) features to use some of the 
new stuff.
and later you have to do a 2.6 with (__future__) features to python 3.0, 
because as they state in then pep-3000

<snip>
There is no requirement that Python 2.6 code will run unmodified on
Python 3.0
</snip>

Tim