Free-threaded Python is now officially supported, though using it remains optional. Here are four tips for developers getting ...

CPython developers determined the leak is in PyEval_EvalFrameEx, which is used by Cython rather than Python, but is only present in Python 3.10 and earlier, but not Python 3.11 and later.

Snow apparently spends 20% of his time at Microsoft working on CPython. Katriel says she has been able to focus on performance thanks to Microsoft hiring her and working with Van Rossum.

You’ll not only use CPython headers to describe those rich objects, but you’ll contend with the possible performance issues of using them. The Python project Cython has similar limitations.