[issue37163] dataclasses.replace() fails with the field named "obj"

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:

I propose to add a deprecation warning in 3.8 and use the PEP 570 syntax in 3.9 (which means a TypeError if obj is passed by keyword argument).

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<https://bugs.python.org/issue37163>
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