This directory contains common Python code for Thunderbird. The basic rule is that if Python code is cross-module (that's "module" in the Mozilla meaning - as in "module ownership") and is MPL-compatible, AND it applies only to applications build from comm-central derived repositories (Thunderbird and Seamonkey), it should go here. What should not go here: - Vendored python modules (use third_party/python instead) - Python that is not MPL-compatible (see other-licenses/) - Python that has good reason to remain close to its "owning" (Mozilla) module (e.g. it is only being consumed from there).