Fix linting error in src/test_typing_extensions.py

[hegjon]

Before

typing_extensions on  main via 🐍 v3.10.8 took 2s
❯ ~/.local/bin/flake8 --config=.flake8-tests src/test_typing_extensions.py
src/test_typing_extensions.py:20:1: F401 'typing.Iterator' imported but unused

After

typing_extensions on  lint-fix [⇡] via 🐍 v3.10.8
❯ ~/.local/bin/flake8 --config=.flake8-tests src/test_typing_extensions.py

[AlexWaygood]

Can you convert uses in the file such as the following to PEP 526 syntax? It's not actually an unused import, it's just that flake8 v6 doesn't support type comments anymore:

typing_extensions/src/test_typing_extensions.py

Line 933 in 811723c

base_it = range(10) # type: Iterator[int]

You can use https://github.com/ilevkivskyi/com2ann to automate the process.

[hegjon]

typing_extensions on  lint-fix [⇡] via 🐍 v3.10.8 took 8s
❯ ~/.local/bin/flake8 --config=.flake8-tests src/test_typing_extensions.py

typing_extensions on  lint-fix [⇡] via 🐍 v3.10.8
❯ pytest
===================================== test session starts =====================================
platform linux -- Python 3.10.8, pytest-6.2.5, py-1.11.0, pluggy-1.0.0
rootdir: /home/jonny/projects/typing_extensions
plugins: web3-5.29.0, forked-1.4.0, xdist-2.5.0, cov-4.0.0
collected 263 items

src/test_typing_extensions.py ......................................................... [ 21%]
....................................................................................... [ 54%]
.s................s.................................................................... [ 87%]
...................s.s..s.......                                                        [100%]

=============================== 258 passed, 5 skipped in 2.89s ================================

[srittau]

Thanks! LGTM