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unnecessary-literal-dict (C406)#

Derived from the flake8-comprehensions linter.

Fix is always available.

What it does#

Checks for unnecessary list or tuple literals.

Why is this bad?#

It's unnecessary to use a list or tuple literal within a call to dict. It can be rewritten as a dict literal ({}).


dict([(1, 2), (3, 4)])
dict(((1, 2), (3, 4)))

Use instead:

{1: 2, 3: 4}
{1: 2, 3: 4}

Fix safety#

This rule's fix is marked as unsafe, as it may occasionally drop comments when rewriting the call. In most cases, though, comments will be preserved.