Modernize for a Python 3.13 minimum#62
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Raise the supported Python floor from 3.9 to 3.13 and update the code and docs to match. - pyproject.toml: requires-python >=3.13 and ty environment python-version 3.13; enable ruff's pyupgrade (UP) rules to keep syntax modern. - CI: drop the 3.9-3.12 test matrix entries, keeping 3.13 and 3.14. - types.py: use PEP 695 `type` aliases and PEP 604 `|` unions instead of typing.Union. - pointer.py / produce.py: import Hashable, Iterable and Callable from collections.abc instead of the deprecated typing aliases; drop now- redundant string-quoted forward references. - README and docs: state Python 3.13 as the minimum. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01SmQNvz1tx2xncasEyUoVdR
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Raises the supported Python floor from 3.9 to 3.13 and modernizes the code and docs to match. No behavior changes — the public API, semantics, and 100% coverage are unchanged.
Version floor
pyproject.toml:requires-python = ">=3.13", and thetyenvironmentpython-versionbumped to3.13(kept matched torequires-python, as its comment intends).index.md,installation.md) now state Python 3.13 as the minimum.Syntax modernization (enabled by the 3.13 floor)
types.py: theDiffableandOperationaliases now use PEP 695typestatements, and unions use PEP 604|instead oftyping.Union. Both aliases are annotation-only, so this is purely a spelling change.pointer.py/produce.py:Hashable,Iterable, andCallablenow come fromcollections.abcinstead of the deprecatedtypingaliases; removed the now-redundant string-quoted forward references (from __future__ import annotationsis already in effect).Linting
UP) rule set so outdated syntax is caught against the supported Python floor going forward. The whole tree is already clean under it.Verification
pytestwith the--cov-fail-under=100gate: 411 passed, 100% coverage, on Python 3.13.ruff check,ruff format --check, andty checkall clean.uv build+twine checkpass.🤖 Generated with Claude Code
Generated by Claude Code