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unused-unpacked-variable (RUF059)

Added in 0.13.0 · Related issues · View source

Fix is sometimes available.

What it does

Checks for the presence of unused variables in unpacked assignments.

Why is this bad?

A variable that is defined but never used can confuse readers.

If a variable is intentionally defined-but-not-used, it should be prefixed with an underscore, or some other value that adheres to the lint.dummy-variable-rgx pattern.

Example

def get_pair():
    return 1, 2


def foo():
    x, y = get_pair()
    return x

Use instead:

def foo():
    x, _ = get_pair()
    return x

See also

This rule applies only to unpacked assignments. For regular assignments, see unused-variable.

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