Python 313 Release Notes Verified — ((install))

Python 3.13, released on October 7, 2024, is a transformative update focused on performance, concurrency, and developer ergonomics. It introduces landmark experimental features that lay the foundation for a "GIL-free" and faster future for CPython.

Test free-threaded build (advanced):

# Compile from source:
./configure --disable-gil
make
./python -c "import sys; print(sys._is_gil_enabled())"  # False

Notable bug fixes

• Numerous bug fixes across stdlib modules; stability improvements for commonly used APIs.
• Fixes for long-standing edge cases in parsing, serialization, and concurrency primitives.

Removed modules (no longer importable):