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gh-116811: Ensure MetadataPathFinder.invalidate_caches is reachable when delegated through PathFinder. #116812

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merged 3 commits into from
Mar 14, 2024
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gh-116811: Ensure MetadataPathFinder.invalidate_caches is reachable when delegated through PathFinder. #116812

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e8b6d1e
Make MetadataPathFinder a proper classmethod.
jaraco Mar 14, 2024
9fad461
In PathFinder.invalidate_caches, also invoke MetadataPathFinder.inval…
jaraco Mar 13, 2024
2030b1c
Add blurb
jaraco Mar 14, 2024
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3 changes: 3 additions & 0 deletions Lib/importlib/_bootstrap_external.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1470,6 +1470,9 @@ def invalidate_caches():
# https://bugs.python.org/issue45703
_NamespacePath._epoch += 1

from importlib.metadata import MetadataPathFinder
MetadataPathFinder.invalidate_caches()

@staticmethod
def _path_hooks(path):
"""Search sys.path_hooks for a finder for 'path'."""
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1 change: 1 addition & 0 deletions Lib/importlib/metadata/__init__.py
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Expand Up @@ -797,6 +797,7 @@ def _search_paths(cls, name, paths):
path.search(prepared) for path in map(FastPath, paths)
)

@classmethod
def invalidate_caches(cls) -> None:
FastPath.__new__.cache_clear()

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2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Library/2024-03-14-10-01-23.gh-issue-116811._h5iKP.rst
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@@ -0,0 +1,2 @@
In ``PathFinder.invalidate_caches``, delegate to
``MetadataPathFinder.invalidate_caches``.
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