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March 1, 2019
4:47 p.m.
If the keys are not strings, it currently works in CPython, but it may not work with other implementations, or future versions of CPython[2].
I don't think so. https://bugs.python.org/issue35105 and https://mail.python.org/pipermail/python-dev/2018-October/155435.html are about kwargs. I think non string keys are allowed for {**d1, **d2} by language. -- INADA Naoki <songofacandy@gmail.com>