invalid-slice-step / E1144

Message emitted:

Slice step cannot be 0

Description:

Used when a slice step is 0 and the object doesn't implement a custom __getitem__ method.

Problematic code:

LETTERS = ["a", "b", "c", "d"]

LETTERS[::0]  # [invalid-slice-step]

Correct code:

LETTERS = ["a", "b", "c", "d"]

LETTERS[::2]

Created by the typecheck checker.