CPython in Python 3.13
Free-threaded Python, the specialising adaptive interpreter, immortal objects, sub-interpreters, and what changed in the 3.10–3.13 internals.
Free-threaded Python, the specialising adaptive interpreter, immortal objects, sub-interpreters, and what changed in the 3.10–3.13 internals.
What the GIL is, why it exists, how it works in CPython 3.12+, its performance impact, and the Python 3.13 free-threaded mode.