René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Improve documentation for decisions around certain `list`, `dict`, `Mapping`, and `Sequence` methods","articleBody":"[`list.index`](https://github.com/python/typeshed/blob/35064a7f759facd7c3787ab6095964008f97d873/stdlib/builtins.pyi#L797) and [`list.count`](https://github.com/python/typeshed/blob/35064a7f759facd7c3787ab6095964008f97d873/stdlib/builtins.pyi#L798) currently only accepts values of the element type and [`Sequence.index`](https://github.com/python/typeshed/blob/35064a7f759facd7c3787ab6095964008f97d873/stdlib/typing.pyi#L328) and [`Sequence.count`](https://github.com/python/typeshed/blob/35064a7f759facd7c3787ab6095964008f97d873/stdlib/typing.pyi#L329) use `Any` for the type of the argument. In my opinion all of these functions could safely take `object`.\r\n\r\n[`dict.get`](https://github.com/python/typeshed/blob/35064a7f759facd7c3787ab6095964008f97d873/stdlib/builtins.pyi#L861-L864) and [`Mapping.get`](https://github.com/python/typeshed/blob/35064a7f759facd7c3787ab6095964008f97d873/stdlib/typing.pyi#L453-L456) currently only accepts values of the key type. This could be safely extended to be any Hashable object. Non-Hashable values will raise TypeError, but runtime safely accepts values of any other type. I ran into someone on the gitter who needed this a few weeks ago, but he never opened an issue.\r\n\r\nI would be willing to make a PR for this.","author":{"url":"https://github.com/ktbarrett","@type":"Person","name":"ktbarrett"},"datePublished":"2022-01-24T03:15:08.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":8},"url":"https://github.com/7015/typeshed/issues/7015"}