unnecessary-list-index-lookup (PLR1736)

Derived from the Pylint linter.

Fix is always available.

This rule is unstable and in preview. The --preview flag is required for use.

What it does

Checks for index-based list accesses during enumerate iterations.

Why is this bad?

When iterating over a list with enumerate, the current item is already available alongside its index. Using the index to look up the item is unnecessary.

Example

letters = ["a", "b", "c"]

for index, letter in enumerate(letters):
    print(letters[index])

Use instead:

letters = ["a", "b", "c"]

for index, letter in enumerate(letters):
    print(letter)