GH-78722: Raise exceptions from pathlib.Path.iterdir() without delay.#107320
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barneygale merged 1 commit intopython:mainfrom Sep 2, 2023
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…t delay. `pathlib.Path.iterdir()` now immediately raises any `OSError` exception from `os.listdir()`, rather than waiting until its result is iterated over.
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Wow. I'd forgotten I'd reviewed this change (or at least endorsed the proposal) when I was caught by surprise in jaraco/develop#26 (then #129871). That code was relying on the lazy exception behavior. I ended up working around the issue by relying on glob instead of iterdir to get the lenient behavior back. I don't see any mention of this change in "what's new for Python 3.13". Maybe there should be a mention of it. I'm now also a little skeptical of the value of this change. It shows that there are at least some cases where people might be relying on the late resolution of the error. We can discuss in the new issue. |
tumidi
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In Python 3.13, `iterdir()` raises exceptions immediately instead of lazily. This change forces early evaluation to ensure consistent behavior across Python versions. Ref: python/cpython#107320
tumidi
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In Python 3.13, `iterdir()` raises exceptions immediately instead of lazily. This change forces early evaluation to ensure consistent behavior across Python versions. Ref: python/cpython#107320
tumidi
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In Python 3.13, `iterdir()` raises exceptions immediately instead of lazily. This change forces early evaluation to ensure consistent behavior across Python versions. Ref: python/cpython#107320
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pathlib.Path.iterdir()now immediately raises anyOSErrorexception fromos.listdir(), rather than waiting until its result is iterated over.