René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"doctest fails to collect tests from a C function that has been wrapped","articleBody":"# Bug report\n\n### Bug description:\n\n`doctest.DocTestFinder` is now failing to collect examples from functions that are defined in C and then wrapped. It still works just fine with functions that are defined in C but that are _not_ wrapped.\n\nThis bug was introduced by https://github.com/python/cpython/pull/115440. It breaks doctests for Numpy ufuncs in pytest-doctestplus (see https://github.com/scientific-python/pytest-doctestplus/pull/248).\n\nI have placed reproducer code in this Gist: https://gist.github.com/lpsinger/65e59728555dc2096af88d394e2d4a6b. To reproduce, retrieve the code and run the following commands:\n\n```\npip install -e .\npython test.py\n```\n\nThe script test.py fails with this error message:\n\n```\n$ python test.py \nTraceback (most recent call last):\n  File \"/Users/lpsinger/src/doctest-func-without-code/test.py\", line 14, in \u003cmodule\u003e\n    assert len(finder.find(bar.hello)[0].examples) == 1\n               ^^^^^^^^^^^^^^^^^^^^^^\n  File \"/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/doctest.py\", line 942, in find\n    self._find(tests, obj, name, module, source_lines, globs, {})\n  File \"/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/doctest.py\", line 1004, in _find\n    test = self._get_test(obj, name, module, globs, source_lines)\n           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/doctest.py\", line 1072, in _get_test\n    lineno = self._find_lineno(obj, source_lines)\n             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/opt/local/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/doctest.py\", line 1121, in _find_lineno\n    obj = inspect.unwrap(obj).__code__\n          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^\nAttributeError: 'builtin_function_or_method' object has no attribute '__code__'. Did you mean: '__call__'?\n```\n\n### CPython versions tested on:\n\n3.9\n\n### Operating systems tested on:\n\nmacOS\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-117699\n* gh-117708\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/lpsinger","@type":"Person","name":"lpsinger"},"datePublished":"2024-04-09T18:43:10.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":10},"url":"https://github.com/117692/cpython/issues/117692"}