Q41: What is free-threaded Python (PEP 703) and how is the GIL being made optional?
PEP 703 introduces free-threaded CPython, allowing the GIL to be disabled completely in Python 3.13+. It replaces the global lock with fine-grained locks, biased locking, and immortal objects to achieve true multi-core parallel execution across threads.
Key Takeaways
- PEP 703 makes the GIL optional in CPython build flags.
- Replaces the global lock with fine-grained thread locking.
Knowledge Check
Starting in Python 3.13, how can developers execute threads without GIL limitations in experimental builds?