The format value has to be a string literal, every time.
Otherwise, you are not using these functions correctly. To reinforce this fact, I putrestrict over every non-contrib example of this I could find.
Dictionary order is not stable in Python < 3.6 so we need to sort
by key to have consistent results.
The LogHandler output is also different on older Python versions.
Also, don't stop running python tests after the first error.
