a9d0ebc262 Enable flake8 warnings for all currently non-violated rules (practicalswift)
4cbab15e75 tests: Fix accidental redefinition of previously defined variable via list comprehension (practicalswift)
0b9207efbe Enable flake8 warning for "list comprehension redefines 'foo' from line N" (F812) (practicalswift)
Pull request description:
* Enable `flake8` warnings for all currently non-violated rules
* Fix accidental redefinition via list comprehension
Tree-SHA512: 738b87789e99d02abb2c6b8ff58f65c0cbfeb93e3bf320763e033e510ebd0a4f72861bc8faaf42c14a056a5d4659c33dc70a63730a32cc15159559427bf21193