[flohofwoe]

Each new minor Python 3.x version has plenty of deprecations followed by removals in the stdlib though.

[Hamuko]

I don't think even those are particularly short periods. TestCase.assertEquals() was deprecated in Python 3.2 (February 2011) and removed in Python 3.12 (October 2023). 12 ⅔ years to get rid of a silly alias because it's a breaking change (of a single character).