python-dev has never been professional. Steering Council member Wouters:
https://marc.info/?l=python-dev&m=107666540014940&w=2
"Eek... What do we have the fucking warning framework and deprecation warnings for, anyway ?!"
Van Rossum:
https://marc.info/?l=python-dev&m=139283012525982&w=2
"Larry volunteered to be the release manager and got widespread support when he did. If you don't trust him, go fucking fork the release yourself."
Both are members of the inner circle and protected.