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ruff/crates/red_knot_python_semantic/resources/mdtest/expression/assert.md
Andrew Gallant 0f47810768 red_knot_python_semantic: improve diagnostics for unsupported boolean conversions 
This mostly only improves things for incorrect arguments and for an
incorrect return type. It doesn't do much to improve the case where
`__bool__` isn't callable and leaves the union/other cases untouched
completely.

I picked this one because, at first glance, this _looked_ like a lower
hanging fruit. The conceptual improvement here is pretty
straight-forward: add annotations for relevant data. But it took me a
bit to figure out how to connect all of the pieces.
2025-04-24 11:43:01 -04:00

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Condition with object that implements __bool__ incorrectly

class NotBoolable:
    __bool__: int = 3

# error: [unsupported-bool-conversion] "Boolean conversion is unsupported for type `NotBoolable`"
assert NotBoolable()