Ivan Levkivskyi <levkivs...@gmail.com> added the comment:
> I'm not sure I understand the distinction.
Initially I thought about only flagging code like this:
@dataclass
class C:
x = field()
But not this:
@dataclass
class C:
x = 42
Now I think we should probably flag both as errors.
> How do we only pick out `y` and probably `prop`, and ignore the rest, without
> being overly fragile to new things being added? I guess ignoring dunders and
> things in `__annotations__`. Is that close enough?
We had a similar problem while developing Protocol class (PEP 544). Currently
we just a have a whitelist of names that are skipped:
'__abstractmethods__', '__annotations__', '__weakref__', '__dict__',
'__slots__', '__doc__', '__module__'
(plus some internal typing API names)
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<https://bugs.python.org/issue32428>
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