Update to mypy==0.730

[mkurnikov]

No description provided.

[pradyunsg]

Thanks for filing this PR!

The mypy.txt file has to be deleted (it's no longer used). We switched to pre-commit in #7078 and it seems like I've missed deleting that file. You'd want to update the version in .pre-commit-config.yaml. :)

[mkurnikov]

Got it.

Is it ok, if I use # noqa: F821 for now?

./src/pip/_internal/utils/appdirs.py:230:78: F821 undefined name 'ignore'
./src/pip/_internal/utils/appdirs.py:230:78: F821 undefined name 'attr'
./src/pip/_internal/utils/appdirs.py:230:78: F821 undefined name 'defined'

[mkurnikov]

Actually, there's no way I can fit this line into 80 chars limit, without pretty nasty indentation, any recommendations on how to do it better?

[pradyunsg]

func = ctypes.windll.kernel32.GetShortPathNameW?

I mean, I don't like it either but I can't think of anything better. :)

[mkurnikov]

@pradyunsg Found a better way, and with that, error codes won't make much difference, so no noqa: F821 required.