Lower python version to use 3.10#9
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alexachille merged 2 commits intostrands-labs:mainfrom Apr 29, 2026
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Replace PEP 695 generic syntax (class Foo[T]:, def foo[T]():) with the equivalent TypeVar/ParamSpec/Generic pattern supported since Python 3.10. This is the only change needed since no other 3.11+ features are used and all dependencies already support 3.10. Files changed: - core.py, decorator.py, types/graph.py, memory/base.py, utils/_async.py: rewrite generics to old-style TypeVar/ParamSpec/Generic - pyproject.toml: requires-python >=3.10, add 3.10/3.11 classifiers Note: This can be reverted once Python 3.11 reaches EOL (October 2027) and the minimum supported version is raised to 3.12, which natively supports PEP 695 syntax.
The hooks field passed via **agent_kwargs has type list[HookProvider] | None but Agent expects list[HookProvider | HookCallback[Any]] | None. This is a type variance issue with mutable containers — list is invariant in mypy. Add arg-type to the existing type: ignore comment to suppress it.
alexachille
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Apr 29, 2026
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Thanks! We originally set 3.12+ defensively for future flexibility, but fair point: we're not using anything beyond PEP 695, and broader version support is a win.
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What does this change do?
Lowers the minimum Python version from 3.12 to 3.10 by replacing PEP 695 generic syntax with the equivalent
TypeVar/ParamSpec/Genericpattern.Why are you making this change?
Python 3.10 and 3.11 are still actively supported (EOL Oct 2026 and Oct 2027 respectively). The only thing requiring 3.12 was PEP 695 syntax — no other 3.11+ features are used and all dependencies already support 3.10. This broadens compatibility with no functional or API changes.
Changes
core.py,decorator.py,types/graph.py,memory/base.py,utils/_async.py)requires-python >= 3.10, added 3.10/3.11 classifiersarg-typeerror on Agent hooks parameterHow was this tested?
hatch run test)hatch run format)hatch run lint)hatch run typecheck)Note
This can be reverted once Python 3.11 reaches EOL (October 2027) and the minimum is raised to 3.12, which natively supports PEP 695 syntax.
Closes #8
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