unnecessary-literal-dict (C406)

Derived from the flake8-comprehensions linter.

Fix is always available.

What it does

Checks for unnecessary list or tuple literals.

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)))
dict([])

Use instead:

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

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.