Hot #Python take: textwrap.dedent is great, but inspect.cleandoc is better (and it should be in textwrap, not inspect).
https://docs.python.org/3/library/inspect.html#inspect.cleandoc
(Actually not a hot take, it's carefully considered!)
@nedbat Huh, I had no idea. I always do textwrap.dedent, then str.lstrip. This is much nicer, but seconding it should be in a more discoverable place!