Add support of SimpleNamespace in copy.replace() #109174
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type-feature
A feature request or enhancement
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serhiy-storchaka
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Sep 9, 2023
serhiy-storchaka
added a commit
to serhiy-storchaka/cpython
that referenced
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Sep 9, 2023
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The implementation in #109175 is equivalent to def __replace__(self, /, **kwargs):
result = type(self)()
result.__dict__.update(self.__dict__)
result.__dict__.update(kwargs)
return resultIt does not pass arguments to the constructor, but this is consistent with pickling and copying. In any case, a SimpleNmaespace subclass with constructor is very unusual. |
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Feature or enhancement
SimpleNamespace is used as a simple data record type, a simpler alternative to named tuples and dataclasses. Although it is easy to create a copy of a SimpleNamespace instance with modified attributes (
SimpleNamespace(**vars(ns), attr=newvalue)), it would be convenient if SimpleNamespace be supported incopy.replace()which already supports named tuples and dataclasses.#108751
https://discuss.python.org/t/generalize-replace-function/28511
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