usage: plac_example.py [-h] [-n NUMBER] {add,subtract,multiply} ...

Calculator CLI

positional arguments:
  {add,subtract,multiply}
    add                 Add two numbers
    subtract            Subtract two numbers
    multiply            Multiply two numbers

optional arguments:
  -h, --help            show this help message and exit
  -n NUMBER, --number NUMBER
                        Base number to operate on

For detailed help on commands:
  plac_example.py add --help
  plac_example.py subtract --help
  plac_example.py multiply --help
