New submission from Ran Benita <r...@unusedvar.com>:
The numbers.Real ABC requires the __ceil__ and __floor__ methods (https://github.com/python/cpython/blob/v3.8.0/Lib/numbers.py#L178-L186), however, the float type does not have them. In regular Python, this is not a problem, because math.ceil() and math.floor() special-case float and work on it directly, and numbers.Real is implemented on float by explicitly registering it (so it's not checked that all required methods are implemented). Where it becomes a (minor) problem is in typeshed, where the type checker *does* check that all abstract methods are implemented. So, because float is missing these two, typeshed cannot have float implement numbers.Real. Refs: https://github.com/python/typeshed/issues/3195 ---------- components: Interpreter Core, Library (Lib) messages: 355642 nosy: bluetech priority: normal severity: normal status: open title: float is missing __ceil__() and __floor__(), required by numbers.Real type: behavior _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue38629> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
