[stevenrj]

I've been using docopt to handle CLI arguments for years now.

http://docopt.org/

[frafra]

This seems very cool, but last release is from 2014, last commit is from 2018, and there are various bug fixing PR that have been waiting for years to be merged :( What about https://github.com/jazzband/docopt-ng?

[fragmede]

This is my pick. Self documenting code ftw!