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code action for narrowing the value with an is not None #4169

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#4244
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code action for narrowing the value with an is not None#4169
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#4244
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asukaminato0721
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language-serverIssues specific to our IDE integration rather than type checkingnarrowingIssues with narrowing - root cause is usually narrowing, flow handling, or both

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@asukaminato0721
asukaminato0721
opened on Jul 16, 2026
def g(y: int):...
def f(x: int | None):
    g(x)

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language-serverIssues specific to our IDE integration rather than type checkingnarrowingIssues with narrowing - root cause is usually narrowing, flow handling, or both

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