René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug]: GridSpec do not type check as Iterable in zip","articleBody":"### Bug summary\n\n`GridSpec` objects are iterable because they have a `__getitem__` method.  However, they are not a [`collections.abc.Iterable`](1):\r\n\r\n\u003e \\[`Iterable`\\] does not detect classes that iterate with the [`__getitem__()`](https://docs.python.org/3/reference/datamodel.html#object.__getitem__) method.\r\n\r\nThis means that they do not type check in `zip`, at least according to [typeshed](2)\r\n\r\n[1]: https://docs.python.org/3/library/collections.abc.html#collections.abc.Iterable\r\n[2]: https://github.com/python/typeshed/blob/78a86de5d966fe403c4184fb4a795e7fb559214b/stdlib/builtins.pyi#L1714\n\n### Code for reproduction\n\n```Python\nfrom matplotlib.gridspec import GridSpec\r\n\r\ngs = GridSpec(3, 3)\r\ncounter = range(9)\r\nfor cell in gs:\r\n    print(cell)\r\n\r\nfor i, cell in zip(counter, gs):\r\n    print(cell)\n```\n\n\n### Actual outcome\n\nCode runs, but type type checking says that GridSpec is not Iterable\n\n### Expected outcome\n\nType checks OK\n\n### Additional information\n\n_No response_\n\n### Operating system\n\nLinux\n\n### Matplotlib Version\n\n3.8.4\n\n### Matplotlib Backend\n\n_No response_\n\n### Python version\n\n3.10.12\n\n### Jupyter version\n\nN/A\n\n### Installation\n\npip","author":{"url":"https://github.com/Jacob-Stevens-Haas","@type":"Person","name":"Jacob-Stevens-Haas"},"datePublished":"2024-04-29T21:41:02.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":7},"url":"https://github.com/28151/matplotlib/issues/28151"}