Feedback from the core Python developers and interaction with them when fixing bugs is excellent.
Bug reporting (and fixing, if possible) is strongly encouraged. Happens regularly. Includes things like
Case sensitivity (it disappeared) in ConfigParser in 2.2.
Passive FTP fix in 2.2.1.
Thread safety of the Queue module in 1.5.1.
Have prompted a few documentation changes. Either we were too stupid to understand something or where it was incorrectly or undocumented.