René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Maximum recursion depth exceeded in __getattr__().","articleBody":"# Bug report\r\n\r\nWe're hitting `RecursionError: maximum recursion depth exceeded` in Django test suite with Python 3.12.0a7 when accessing an attribute with a custom `__getattr__()` method:\r\n```\r\nERROR: test_access_warning (deprecation.test_storages.DefaultStorageDeprecationTests.test_access_warning)\r\n----------------------------------------------------------------------\r\nTraceback (most recent call last):\r\n  File \"/django/tests/deprecation/test_storages.py\", line 128, in test_access_warning\r\n    settings.DEFAULT_FILE_STORAGE\r\n  File \"/django/django/conf/__init__.py\", line 83, in __getattr__\r\n    if (_wrapped := self._wrapped) is empty:\r\n                    ^^^^^^^^^^^^^\r\n  File \"/django/django/conf/__init__.py\", line 83, in __getattr__\r\n    if (_wrapped := self._wrapped) is empty:\r\n                    ^^^^^^^^^^^^^\r\n  File \"/django/django/conf/__init__.py\", line 83, in __getattr__\r\n    if (_wrapped := self._wrapped) is empty:\r\n                    ^^^^^^^^^^^^^\r\n  [Previous line repeated 790 more times]\r\nRecursionError: maximum recursion depth exceeded\r\n```\r\n\r\nSee [affected test](https://github.com/django/django/blob/fdf0a367bdd72c70f91fb3aed77dabbe9dcef69f/tests/deprecation/test_storages.py#L47-L49) and [`LazySettings.__getattr__()`](https://github.com/django/django/blob/fdf0a367bdd72c70f91fb3aed77dabbe9dcef69f/django/conf/__init__.py#L81-L96).\r\n\r\nBisected to the aa0a73d1bc53dcb6348a869df1e775138991e561.\r\n\r\nI'd try to prepare a small regression test.\r\n\r\n# Your environment\r\n\r\n- CPython versions tested on: Python 3.12.0a7\r\n- Operating system and architecture: x86_64 GNU/Linux\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-103336\n* gh-103351\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/felixxm","@type":"Person","name":"felixxm"},"datePublished":"2023-04-05T09:36:57.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":9},"url":"https://github.com/103272/cpython/issues/103272"}