[Python-Dev] Keyword arguments with non-string names

2019年7月09日 05:46:36 -0700

When passing **kwargs to a callable, the expectation is that kwargs is a dict with string keys. The interpreter enforces that it's a dict, but it does NOT check the types of the keys. It's currently the job of the called function to check that. In some cases, this check is not applied: 
>>> from collections import OrderedDict
>>> OrderedDict(**{1:2})
OrderedDict([(1, 2)])
So this leads to the question: should the interpreter check the keys of a **kwargs dict? I don't have an answer myself, I'm just asking the question because it comes up in https://github.com/python/cpython/pull/13930 and https://github.com/python/cpython/pull/14589 
Jeroen.
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