Update io.pyi

[baterflyrity]

See corresponding issue.

[github-actions]

Diff from mypy_primer, showing the effect of this PR on open source code:

werkzeug (https://github.com/pallets/werkzeug.git)
+ src/werkzeug/wsgi.py:962: error: Signature of "read" incompatible with supertype "IOBase"

rich (https://github.com/willmcgugan/rich.git)
+ rich/file_proxy.py:28: error: Signature of "write" incompatible with supertype "IOBase"

pytest (https://github.com/pytest-dev/pytest.git)
+ src/_pytest/capture.py:208: error: Signature of "write" incompatible with supertype "IOBase"  [override]

[Akuli]

Maybe this is related: python/mypy#5876

[Akuli]

This should fix the mypy_primer errors. I tried doing what werkzeug does, but I didn't check if other errors get fixed with this.

[baterflyrity]

@Akuli , thanks for help. Useful link and commit, hope it will help.

ps
Also one can try for similar issue next links: partially arbitrary parameters and property hack.

[github-actions]

Diff from mypy_primer, showing the effect of this PR on open source code:

rich (https://github.com/willmcgugan/rich.git)
+ rich/file_proxy.py:28: error: Signature of "write" incompatible with supertype "IOBase"

pytest (https://github.com/pytest-dev/pytest.git)
+ src/_pytest/capture.py:208: error: Signature of "write" incompatible with supertype "IOBase"  [override]

[Akuli]

Don't know if mypy_primer is showing outdated results above

[baterflyrity]

@Akuli , so what can you suggest?

[Akuli]

I would try making an empty commit to rerun mypy_primer. Don't know if there's a better way.

[baterflyrity]

@Akuli , very nice, according to mypy_primer no diffs have been found. So what is needed next to merge this PR and close #4906 ?

[Akuli]

A typeshed collaborator (not me, I'm just a contributor) has to review this, and if it looks good to the collaborator, they will likely merge it and close the issue.

[srittau]

The change seems correct to me and the best solution. I am still a bit wary that this might cause unforeseen problems, but the mypy_primer output makes me optimistic. Let's try this an be prepared to revert if it causes problems.