If you ever get to use this library, it’s design is horrible and it’s documentation is worse. If you want to retrieve the basic RPM data, I have a code snippet you can use:
As long as at the top of your file you had import rpm that should work file. That gives a few basic fields. To get a full list of fields, I actually used a reference from a perl module: http://cpansearch.perl.org/src/RJRAY/Perl-RPM-1.51/RPM/Constants.pm.
If you expect more information, it really isn’t out there. Every mailing list post tells you to visit slides at people.redhat.com, on a webpage which no longer exists from 2004. I was able to find it again, so this may help you also: http://www.ukuug.org/events/linux2004/programme/paper-PNasrat-1/rpm-python-slides/toc.html. ActiveState’s website also has a snippet showing a bit of what is contained in that hdr class, which really helped trying to decipher this: http://code.activestate.com/recipes/576767/.
And for all future python programmers out there, THERE IS NO NEED TO ABBREVIATE VARIABLE NAMES. We have big computers, lots of memory, and naming things ‘hdr’ and ‘ts’ help nobody, and make your code horrible for others to use. Seriously, expand them out.