Eric V. Smith <e...@trueblade.com> added the comment:
This appears to be due to dataclasses needing to create a new class in order to
set __slots__. I'll look at it, but I doubt there's anything that can be done.
attrs has the same issue:
File "xxxxx/.local/lib/python3.8/site-packages/attr/_make.py", line 889, in
_create_slots_class
cls = type(self._cls)(self._cls.__name__, self._cls.__bases__, cd)
TypeError: __init_subclass__() missing 1 required positional argument: 'msg'
----------
assignee: -> eric.smith
type: crash -> behavior
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue46970>
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