unnecessary-literal-set (C405)

Derived from the flake8-comprehensions linter.

Fix is always available.

What it does

Checks for set calls that take unnecessary list or tuple literals as arguments.

Why is this bad?

It's unnecessary to use a list or tuple literal within a call to set. Instead, the expression can be rewritten as a set literal.

Examples

set([1, 2])
set((1, 2))
set([])

Use instead:

{1, 2}
{1, 2}
set()

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.