Mypy error when subclassing `Controller` | Litestar | Page 1

dire sonnet Feb 8, 2025, 2:31 PM

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Hi all, started getting errors on the Controller after moving to mypy strict, any ideas what that may be? I think this was related to the explicit exports, although it does seem Litestar is normally exporting and defining the Controller, although the same error shows when importing from litestar import Controller and from litestar.controller import Controller. The error is Class cannot subclass Controller (has Any type) Any ideas?

velvet deltaBOT Feb 8, 2025, 2:31 PM

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Notes for Mypy error when subclassing `Controller`

At your assistance

@dire sonnet

No Response?

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Closing

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MCVE

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wicked rover Feb 8, 2025, 2:33 PM

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Can you do a simple check?
Create a check.py file:

from litestar import Controller
reveal_type(Controller)
```and run mypy against it

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If that also outputs Any, something's wonky with your setup 😉

dire sonnet Feb 14, 2025, 4:10 AM

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Yeah, something's is definitely wonky, just can;t find out what!
Forgot to mention, I did the test and it's "Any" indeed. Other interesting thing is that Mypy skips Litestar (mypy . --verbose --show-traceback):

LOG:  Skipping /Users/myuser/Developer/myproj/myproj-api/.venv/lib/python3.11/site-packages/litestar/di.py (litestar.di)
LOG:  Skipping /Users/myuser/Developer/myproj/myproj-api/.venv/lib/python3.11/site-packages/litestar/params.py (litestar.params)
LOG:  Skipping /Users/myuser/Developer/myproj/myproj-api/.venv/lib/python3.11/site-packages/litestar/datastructures/__init__.py (litestar.datastructures)
LOG:  Skipping /Users/myuser/Developer/myproj/myproj-api/.venv/lib/python3.11/site-packages/litestar/enums.py (litestar.enums)

Even though I have 2.14.0, and when manually inspecting i do see py.typed on the litestar package

#Mypy error when subclassing `Controller`