Most linters would have suggested correcting it to: validated_items = [_ for _ in items if is_validated(x)] where _ is used as a safe variable that can always

Most linters would have suggested correcting it to: validated_items = [_ for _ in items if is_validated(x)] where _ is used as a safe variable that can always be clobbered. (Though this does also clash with its use as a gettext function for strings).