False Positive: walrus in a list comprehension

[bradezard131]

Minimal reproduction:

def foo(x):
    fns = [lambda x: x + 1, lambda x: x + 2, lambda x: x + 3]
    return [(x := fn(x)) for fn in fns]

This raises F841 incorrectly asserting that the x variable assigned in the comprehension is never used

[asottile]

what version are you using?

[bradezard131]

pyflakes==3.2.0 which afaict is the latest?

[sigmavirus24]

What version of python are you running on?

[bradezard131]

Python 3.10.12

[asottile]

please try out #801

[bradezard131]

Yep that fixes it for me