missing-whitespace-around-modulo-operator (E228)

Derived from the pycodestyle linter.

Fix is always available.

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

What it does

Checks for missing whitespace around the modulo operator.

Why is this bad?

PEP 8 recommends never using more than one space, and always having the same amount of whitespace on both sides of a binary operator.

For consistency, this rule enforces one space before and after a modulo operator (%).

(Note that PEP 8 suggests only adding whitespace around the operator with the lowest precedence, but that authors should "use [their] own judgment".)

Example

remainder = 10%2

Use instead:

remainder = 10 % 2