The latter two are correct (and likely most of your etc.), but pip is not official. pip maintainers only claim it is “PyPA recommended”, and PEP 453 is extremel

The latter two are correct (and likely most of your etc.), but pip is not official. pip maintainers only claim it is “PyPA recommended”, and PEP 453 is extremely careful to only say “officially recommended” (by CPython core maintainers). I told you this is pedantic! Source: I am a pip maintainer and a PyPA member.