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Title: GH-101362: Optimise PurePath(PurePath(...)) by barneygale · Pull Request #101667 · python/cpython · GitHub

Open Graph Title: GH-101362: Optimise PurePath(PurePath(...)) by barneygale · Pull Request #101667 · python/cpython

X Title: GH-101362: Optimise PurePath(PurePath(...)) by barneygale · Pull Request #101667 · python/cpython

Description: The previous _parse_args() method pulled the _parts out of any supplied PurePath objects; these were subsequently joined in _from_parts() using os.path.join(). This is actually a slower form of joining than calling fspath() on the path object, because it doesn't take advantage of the fact that the contents of _parts is normalized! This reduces the time taken to run PurePath("foo", "bar") by ~20%, and the time taken to run PurePath(p, "cheese"), where p = PurePath("/foo", "bar", "baz"), by ~40%. Issue: gh-101362 Automerge-Triggered-By: GH:AlexWaygood

Open Graph Description: The previous _parse_args() method pulled the _parts out of any supplied PurePath objects; these were subsequently joined in _from_parts() using os.path.join(). This is actually a slower form of joi...

X Description: The previous _parse_args() method pulled the _parts out of any supplied PurePath objects; these were subsequently joined in _from_parts() using os.path.join(). This is actually a slower form of joi...

Opengraph URL: https://github.com/python/cpython/pull/101667

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