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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"BUG: [py3.11] AttributeError: 'PathDistribution' object has no attribute '_normalized_name'","articleBody":"This shows up while [trying](https://github.com/conda-forge/numpy-feedstock/pull/283) to run the numpy test suite with python 3.11 and the newest pytest etc.\r\n\r\n```\r\n==================================== ERRORS ====================================\r\n________________________ ERROR collecting test session _________________________\r\n\r\n[...]\r\n\r\n=========================== short test summary info ============================\r\nERROR  - AttributeError: 'PathDistribution' object has no attribute '_normalized_name'\r\nERROR  - AttributeError: 'PathDistribution' object has no attribute '_normalized_name'\r\n2 errors in 1.41s\r\n```\r\n\r\nMore precisely, the error appears in the vendored import_lib module\r\n```\r\n[...]/lib/python3.11/importlib/metadata/__init__.py:472: in load\r\n    ordered = sorted(eps, key=by_group)\r\n        by_group   = operator.attrgetter('group')\r\n        cls        = \u003cclass 'importlib.metadata.SelectableGroups'\u003e\r\n        eps        = \u003citertools.chain object at 0x7f19804ea5f0\u003e\r\n[...]/lib/python3.11/importlib/metadata/__init__.py:1013: in \u003cgenexpr\u003e\r\n    eps = itertools.chain.from_iterable(\r\n        .0         = \u003cgenerator object unique_everseen at 0x7f19805e9d40\u003e\r\n[...]/lib/python3.11/importlib/metadata/_itertools.py:16: in unique_everseen\r\n    k = key(element)\r\nE   AttributeError: 'PathDistribution' object has no attribute '_normalized_name'\r\n        element    = \u003cimportlib_metadata.PathDistribution object at 0x7f19802c0450\u003e\r\n        iterable   = \u003citertools.chain object at 0x7f19804eae00\u003e\r\n        key        = operator.attrgetter('_normalized_name')\r\n        seen       = set()\r\n        seen_add   = \u003cbuilt-in method add of set object at 0x7f198035b060\u003e\r\n```\r\n\r\nTurns out this is https://github.com/python/importlib_metadata/issues/396 (fixed in 4.13.0), where @jaraco noted: \r\n\u003e Perhaps importlib_metadata should provide a compatibility shim to honor name normalization in distributions not supplying it (or at least not crash).\r\n\r\nUnfortunately, the vendored version present in python 3.11 is [only](https://github.com/python/cpython/blob/3.11/Lib/importlib/metadata/__init__.py) at 4.11.3, hence does not carry the fix.","author":{"url":"https://github.com/h-vetinari","@type":"Person","name":"h-vetinari"},"datePublished":"2022-10-26T08:50:48.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/98706/cpython/issues/98706"}