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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"`typing` tests: `test_overload_on_compiled_functions()` may not work on alternative Python implementations","articleBody":"# Bug report\r\n\r\nA few weeks ago, the `typing_extensions` backport library received a bug report that `test_overload_on_compiled_functions()`, a recently added test, failed when run on PyPy: https://github.com/python/typing_extensions/issues/83. This is due to the fact that `builtins.sum()` and `builtins.print()` are not compiled functions on PyPy.\r\n\r\nThe same test exists in the CPython test suite (the test was ported over to `typing_extensions` in https://github.com/python/typing_extensions/pull/73 after being added to the CPython test suite in #96479): https://github.com/python/cpython/blob/de6981680bcf6496e5996a853b2eaa700ed59b2c/Lib/test/test_typing.py#L4638-L4650.\r\n\r\nI think the test should probably be marked with the `@test.support.cpython_only` decorator in the CPython test suite.\r\n\r\n(Cc. @sobolevn, who added the test.)","author":{"url":"https://github.com/AlexWaygood","@type":"Person","name":"AlexWaygood"},"datePublished":"2022-10-26T11:42:56.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/98713/cpython/issues/98713"}