Comment 1 for bug 1630832

python-conntrack is unmaintained
pynetfilter_conntrack seems more complete just not very active (does that mean it's stable?)

Either way, are there other options?

1) Are we duplicating any conntrack calls?
2) Are we running a lot of commands when a different, one-liner will work?

But feel free to create a patch and send it out for review based on what you wrote above as well.