Month: February 2021

An analysis of several Python CLI libraries to detect their usability in various cases.

Usecase

We want to design a command with following usage based on compilation of several existing commands:

Usage: testcli [options] [--choices=VALUE]... [--params=...] create <label>
       testcli [options] [--choices=VALUE]... [--params=...] drop <label>
       testcli -h | --help
       testcli --version

Options:
  -h, --help             Show this help message and exit.
  --version              Show program's version number and exit.
  --config=FILE          Set config file.
  --string=STRING        Set custom string.
  --number=NUMBER        Set custom number.
  --params=KEY=VALUE     Set custom parameters.
  --today=DATE           Set custom today [default: today].
  --choices=VALUE        Set custom choices [default: all]. Available options: 'all', 'foo', 'bar', 'baz'.
  -n, --dry-run          Don't actually do anything.
  -v,--verbosity=LEVEL   Set verbosity level in range 0 to 3 [default: 1].