Thanks a lot! Great points. Looks like a good linter like https://github.com/wemake-services/wemake-python-styleguide will catch almost all of these problems.

Could not find a theme for myself for a long time. So, I've ended up creating my own: sobole . It is minimalistic and powerful. https://sobolevn.github.io/sobole-zsh-theme/ Features: virtualenv, git, ls, grep, whoami, handsome error codes