Since Perl people are currently designing a Perl policy, and since I don't find a policy document for Python (just technical info for the maintainers, but feel free to send me reading the FM, if I missed it), I think you may be interested by the DRAFT Java policy. Many points are similar in our languages (such as the naming of "libraries", do Python folks use lib-XXX-python for their add-on packages?).
http://www.debian.org/~bortz/Java/policy.html
