chore(python): add E231 to .flake8 ignore list#440

gcf-merge-on-green[bot] merged 2 commits intomaingoogleapis/python-bigquery-sqlalchemy:mainfrom

owl-bot-update-lock-462782b0b492346b2d9099aaff52206dd30bc8e031ea97082e6facecc2373244googleapis/python-bigquery-sqlalchemy:owl-bot-update-lock-462782b0b492346b2d9099aaff52206dd30bc8e031ea97082e6facecc2373244Copy head branch name to clipboard