Eric V. Smith <e...@trueblade.com> added the comment:

Unfortunately your change isn't backward compatible with the existing 
(namedtuple) version.

I expect this to fail in the dataclass version:
>>> finder, name, ispkg = list(pkgutil.iter_modules(None))[0]

And since this is an enhancement, it can only go in to 3.8. And the window is 
closing for that, so it's more likely to be 3.9, if we decide that backward 
compatibility isn't important here.

----------
nosy: +eric.smith
type:  -> enhancement
versions:  -Python 3.6, Python 3.7

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue36962>
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