Not sure how/if this should be backported.

Sorry if I'm missing something but which plugin are you referring to? Was it added to the workflow recently?

AFAIK we don't use or endorse pytest in cpython development.

@ammaraskar The Python plugin for Visual Studio Code generates these caches when the project is opened. I figured that since caches for other “unofficial” tools like .mypy_cache/ and .vscode/ are included here, it could be good to add.

Not a huge deal, but could be helpful to others.

Sounds good 👍

Maybe group up the vscode related ones and put a comment there just so people know why?

Well, this is a pytest cache, not a VSCode cache. The plugin just happens to trigger it (.mypy_cache/ is the same).

The Python plugin creates .pytest_cache directories for projects not using pytest? Sounds like a bug in the plugin! (And if it's this plugin that caused the addition of .mypy_cache to our .gitignore, maybe that should be fixed too...)

mypy cache is an older manual addition: #6614

Is is possible to run (some) CPython tests with pytest? If not, an IDE plugin dumping things to all your projects uncontrollably does not seem good.

It is possible. In fact, I've used pytest in the past to get nice iterative output, with something like pytest Lib/test/test_glob.py --looponfail.

Again, this is just a suggestion. I can always add it to my personal ignore file, but I figured if it was useful for me, it might be useful for others!

Not sure how/if this should be backported.

Since the vast majority of development is done based on the master branch, I don't think it is worth backporting this.

Thanks @taleinat!