In msg342227 Pablo Galindo Salgado said "I am +1 to such a sentence, but I think this is a decision that more core devs should agree on."

> "These types are not supposed to be instantiated outside of CPython internals"

At least Petr Vidtorin and I disagree with this part.  As Petr wrote on pydev thread "Expected stability of PyCode_New() and types.CodeType() signatures", there are multiple tools that instantiate code objects, in particular Cython, which is far from being a rogue project.  Python is a 'consenting adults' languages, and we generally do not officially tell people what they are 'supposed' to do or not do.