[th/black-all] reformat all python with black
If you find it cumbersome to rebase an existing branch after this is merged, send it to me, I can do it.
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
If you find it cumbersome to rebase an existing branch after this is merged, send it to me, I can do it.