Moving from Python 2 to 3? Here's what you need to know about strings and their role in in your upgrade. An old joke asks "What do you call someone who speaks three languages? Trilingual. Two ...

I get this from mypy: On Python 3 '{}'.format(b'abc') produces "b'abc'", not 'abc'; use '{!r}'.format(b'abc') if this is desired behavior [str-bytes-safe] That message doesn't make it clear whether ...