Python 3.13 was ambitious. The introduction of the --disable-gil build (a.k.a. free-threaded Python ) and the copy-and-patch JIT compiler introduced edge cases that weren't caught in the alphas. By version 3.13.7, the team has aggressively backported fixes to ensure that the default build (GIL-enabled) remains rock-solid, while the experimental builds become usable for early adopters.
This release follows the standard release schedule for Python 3.13, aimed at refining the experimental features introduced in the 3.13.0 final release. August 14, 2025 python 3.13.7 changelog
Python 3.13 introduced several ground-breaking experimental features. Version 3.13.7 includes refinements for: Python 3
"There is one final update," he said. "The Scribes have been working overtime." By version 3
"I speak for the zipfile module," Arthur said, his voice trembling. "In the days of 3.13.6, when I tried to create a ZIP file with a path longer than the Great Wall of Windows, the module would crash! It raised a ValueError and mocked my attempts at archiving."