The pagehttps://docs.python.org/3/faq/design.html#why-are-there-separate-tuple-and-list-data-types says at the end of its last paragraph:

Onlyimmutable elements can be used asdictionary keys...

Which is not quite correct, since dictionaries only require its keys to behashable (seehttps://docs.python.org/3/library/stdtypes.html#mapping-types-dict). Immutability doesn't necessarily imply hashability.

Thanks.

Linked PRs

• gh-134114: Clarify FAQ note about dictonary keys #134118