From project intro page description (5/21/25):

   "Click is a Python package for creating beautiful command line interfaces in a 

    composable way with as little code as necessary. It’s the “Command Line Interface 

    Creation Kit”. It’s highly configurable but comes with sensible defaults out of the box.

    It aims to make the process of writing command line tools quick and fun while also 

    preventing any frustration caused by the inability to implement an intended CLI API.
 
   Click in three points:

      arbitrary nesting of commands

      automatic help page generation

      supports lazy loading of subcommands at runtime "