Issue with havivng .pyi files in a separate folder [Question - Need help]

[waseem18]

This is more of a question than an issue.

I'm starting on using mypyand here's the minimal version of the project I'm type hinting - https://github.com/waseem18/mypy

We planned to have .pyi stubs of each python file separately in a folder named stubs and give the path to stubs folder in mypy.ini file.

I learnt from this stack overflow answer that the stub file works only when importing a module. So I wrote a basic test file in tests folder which basically imports and calls the methods present in mypy/main.py.

When I run mypy tests/test-main.py I get

mypy/main.py:1: error: Function is missing a type annotation
mypy/main.py:5: error: Function is missing a type annotation
mypy/main.py:9: error: Function is missing a type annotation

Though I gave path to stubs folder in mypy.ini file I believe mypy is still not considering stubs/mypy/main.pyi file. If stubs/mypy/main.pyi is considered it should throw me some errors as some of the returns types mentioned in main.pyi are incorrect.

Can someone please help me in knowing where am I exactly going wrong? In other words how do I place .pyi files in a separate folder and run mypy?

Just to point out, if both main.py and main.pyi are in same folder things are working.

Thanks

[emmatyping]

Hi, thank you for a complete repro. You've actually made two mistakes.

The first is the mypy path should point to the directory above the package you want it to find (a package is a folder with a init.py[i]). So you should just be able to say ./stubs.

The second is that your stubs folder is not a package! It doesn't have a __init__.pyi in the mypy folder. Changing these fixes the issues and gives expected output. Let me know if you have further questions.

[waseem18]

Thanks for the response @ethanhs

I'll try that today evening and will let you know if I've any more questions.

[emmatyping]

If you are still having problems feel free to leave a comment.