Finishing the Great Renaming

[vstinner (Victor Stinner)]

@encukou

• Provide prefixed alternatives using e.g. typedef or #define, and encourage linters & foreign-language wrappers to use those
• Add an opt-in that disables the unprefixed names, so people writing new code don’t need to worry about clashes (for example, PEP 743 )

It sounds like a good plan. I suggest to start by adding Py names, and keep old names as aliases to Py names. Later we can decide how to deal with old aliases.