Python 3.9 reached end of life in October 2025, and 3.11 is where the
current ecosystem sits: it unlocks pyarrow 25 (we were held at 21, the
last release supporting 3.9), more-itertools 11, and pandas 3 for the
test suite, along with the large CPython 3.11 interpreter speedups on
exactly the kind of CPU-bound work wikiq does. Nothing in the code
needed changes.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
