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Walrus operator

crates/ty_python_semantic/resources/mdtest/assignment/walrus.md

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Walrus operator

Basic

py
x = (y := 1) + 1
reveal_type(x)  # revealed: Literal[2]
reveal_type(y)  # revealed: Literal[1]

Walrus self-addition

py
x = 0
(x := x + 1)
reveal_type(x)  # revealed: Literal[1]