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Add truthy-coroutine check #16069
Description
Feature
async def func() -> bool:
return True
async def func2() -> None:
if func():
print("hi")In this code, a likely fix is to change func() to await func(). Meanwhile, it'll always be true since a Coroutine is always true. The truthy-bool check could flag it but it's not enabled by default. We can add a new truthy-coroutine check (like truthy-function) for the specific case of using a Coroutine in boolean context.
The error message can suggest that an await might've been mistakenly omitted.
Activity
Added check for a conditional expression that evaluates to a coroutin…
sterliakov commentedon May 4, 2025
This is supported with
--enable-error-code truthy-bool! https://mypy-play.net/?mypy=latest&python=3.12&flags=strict&enable-error-code=truthy-bool%2Cunused-awaitable&gist=90f4e135d45763cdec86fe1917507f93ikonst commentedon May 5, 2025
@sterliakov You misread the report. I'm aware that truthy-bool would report it.
sterliakov commentedon May 5, 2025
Indeed, my apologies!