Bug#978694: RFP: python3-typer -- command line parsing library based on type hints

[Andrej Shadura <andrewsh@debian.org>]

Package: wnpp
Severity: wishlist

* Package name    : python3-typer
  Version         : 0.3.2
  Upstream Author : Sebastián Ramírez
* URL             : https://github.com/tiangolo/typer
* License         : MIT
  Programming Lang: Python 3.6+
  Description     : command line parsing library based on type hints

Typer is a library for building CLI applications that users will love using and developers will love creating. Based on Python 3.6+ type hints.

The key features are:

 * Intuitive to write: Great editor support. Completion everywhere. Less time debugging. Designed to be easy to use and learn. Less time reading docs.
 * Easy to use: It's easy to use for the final users. Automatic help, and automatic completion for all shells.
 * Short: Minimize code duplication. Multiple features from each parameter declaration. Fewer bugs.
 * Start simple: The simplest example adds only 2 lines of code to your app: 1 import, 1 function call.
 * Grow large: Grow in complexity as much as you want, create arbitrarily complex trees of commands and groups of subcommands, with options and arguments.

E.g. this code:

    import typer
    
    def main(name: str):
        typer.echo(f"Hello {name}")
    
    if __name__ == "__main__":
        typer.run(main)

is enough to enable this:

    $ python main.py --help
    
    Usage: main.py [OPTIONS] NAME
    
    Arguments:
      NAME  [required]
    
    Options:
      --install-completion  Install completion for the current shell.
      --show-completion     Show completion for the current shell, to copy it or customize the installation.
      --help                Show this message and exit.

P.S. I don’t have an immediate use for this, so I’m filing it as an RFP, but
I intend to package it some time soon if nobody beats me to it.

-- 
Cheers,
  Andrej