Fedora ponders the Python 2 end game

C vs. C++ breakage happened gradually, early C++ versions were pretty much "C with classes". I've seen million line C applications being translated into C++ by simply renaming the files and doing a few easy changes. And C is a compiled language, so that helps a lot.

And if everything else fails, you can always #include C-based API with minimum fuss even in modern C++ using 'extern "C"{}' blocks.

There's nothing comparable in Python world. The transition was abrupt and it required quite a lot of changes, and being an interpreted language you actually have to test everything.