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bpo-44002: Switch to lru_cache in urllib.parse. by gpshead · Pull Request #25798 · python/cpython · GitHub
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@gpshead gpshead commented May 1, 2021

urllib.parse now uses functool.lru_cache for its internal URL splitting and
quoting caches instead of rolling its own like its the 90s.

The undocumented internal Quoted class is now deprecated, for removal in 3.14.
No existing users were found.

clear_cache() is kept as twisted, gevent, and our own regression test runner were
found to be using it in their test suites.

https://bugs.python.org/issue44002

Automerge-Triggered-By: GH:gpshead

urllib.parse now uses functool.lru_cache for its internal URL splitting and
quoting caches instead of rolling its own like its the 90s.

The undocumented internal Quoted class and clear_cache() APIs are now
deprecated, for removal in 3.14.
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gpshead commented May 1, 2021

I won't merge this until after the 3.10 branch is cut and all of the https://bugs.python.org/issue43882 fixes are in.

@gpshead gpshead requested a review from orsenthil May 1, 2021 22:55
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The test that's failing due to an unexpected BytesWarning in CI is annoying... that means we need to use lru_cache(typed=True) on the urlsplit decorator for safety to avoid other people who enable BytesWarning from seeing that warning.

@rhettinger
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It looks like the Travis CI failed only because of excess whitespace. Running 'make patchcheck' would likely clear it.

@orsenthil
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This final change, which addressed the review comments from the reviewers looks good to me.

twisted, gevent, and our own libregrtest use it in test suites.  We'll
keep it for them.

... and skip Pending on Quoter's DeprecationWarning.  No uses of that have
been found externally.

Also reoragnizes the unittest a bit to be cleaner and fixes a whitespace
problem.
@gpshead gpshead self-assigned this May 3, 2021
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gpshead commented May 3, 2021

Status: awaiting a copy of #25853 to be merged into main before merging this one.

@miss-islington
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@gpshead: Status check is done, and it's a failure ❌ .

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@gpshead: Status check is done, and it's a success ❌ .

@gpshead gpshead merged commit d597fdc into python:main May 12, 2021
@gpshead gpshead deleted the non-90s-urlparse-cache branch May 12, 2021 00:01
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Excellent change. @gpshead :)

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9 participants