chore(ruff): remove unused import.
chore(ruff): whitespace fixes; sort import; "a string".split() to list
chore(ruff): whitespace fixes
chore(ruff): whitespace fixes; elide else: where possible.
chore(ruff): whitespace fixes.
refactor: add strict=True to zip.
refactor: add strict=True to zip.
doc: add comment about zip and strict condition.