Bug#598432: python-apt: upgrade fails

[Stefan Fleischmann <dubliner@gmx.net>]

I just compared the i386 and amd64 packages and it turns out that the path
'usr/lib/python3.1' is changed to 'usr/lib/python3' in the amd64 package.
Looks like pycentral expects x.y version numbers and throws out the
"ValueError" mentioned above which makes dpkg abort configuration.

I think the error occurs when it tries to read the version information from the
file "usr/share/pyshared-data/python-apt".
The 3rd line in the file states "python-version = 2.6, 3, 2.5"

If I rebuild the package with "usr/lib/python3.1" (also changed in
"usr/share/pyshared-data/python-apt" and "python-version = 2.6, 3.1, 2.5")
it installs without problems.

It can be quite tricky to get rid of the messed up package though because dpkg
refuses removing or up/downgrading because the prerm and postinst scripts
return the error mentioned before.

So quick fix for people who have this problem right now:
(I hope this doesn't mess up things in python..)
Change the 3rd line in the file '/usr/share/pyshared-data/python-apt' to
"python-version = 2.6, 3.1, 2.5"
Then you're able to remove the package or replace it with version 0.7.97.1 from
testing.