unnecessary-list-comprehension-set (C403)

Derived from the flake8-comprehensions linter.

Fix is always available.

What it does

Checks for unnecessary list comprehensions.

Why is this bad?

It's unnecessary to use a list comprehension inside a call to set(), since there is an equivalent comprehension for this type.

Example

set([f(x) for x in foo])

Use instead:

{f(x) for x in foo}

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.