Beartype 0.10.1 released.
This patch release cooks up scrumptious support for fast PEP 544 -- Protocols: Structural subtyping (static duck typing) and improved compliance with PEP 570 -- Python Positional-Only Parameters.
This patch release resolves 3 issues and merges 1 pull request. Noteworthy changes include:
Compatibility Improved
- **PEP 570 -- Python Positional-Only Parameters, resolving issue #101 kindly submitted by typing luminary @dycw (Derek Wan). Previously,
@beartypeonly supported positional-only parameters followed by one or more standard parameters in the signature of a callable. Now,@beartypeunconditionally supports callables passed any permutation of positional-only and non-positional-only parameters– including callables passed only one or more positional-only parameters.
Compatibility Optimized
- PEP 544 -- Protocols: Structural subtyping (static duck typing). The
beartype.typing.Protocolsuperclass has now been significantly optimized to internally cache structural subtyping checks acrossisinstance()calls the same protocol and objects of the same type checked against that protocol. Doing so ensures that:- Only the first call to a
@beartype-decorated callable annotated by one or morebeartype.typing.protocol-style protocols will be as slow as equivalent calls to a@beartype-decorated callable annotated by one or moretyping.Protocol-style protocols. - All subsequent calls will be memoized to leverage the results internally cached by the first such call, a ludicrous speedup over the stock
typing.Protocolapproach.
- Only the first call to a
This optimization is entirely thanks to @posita the dynamite ("He's TNT!") devop, who miraculously migrated this caching behaviour from his own in-house numerary.types implementation. Thunderous applause for this third out of three tremendous contributions! Likewise, thanks so much for the grand critique that helped fuel this in my awkward and questionable absence, @TeamSpen210.
You both are the stuff open-source dreams are made of. (Heated cleats!)