# example10.py
import plac


# example with full annotations (help, kind, abbrev, type, choices, metavar)
@plac.annotations(
    operator=("The name of an operator", 'positional', None, str,
              ['add', 'mul']),
    numbers=("Zero or more numbers", 'positional', None, float, None, 'n'))
def main(operator, *numbers):
    "A script to add and multiply numbers"
    if operator == 'mul':
        op = float.__mul__
        result = 1.0
    else:  # operator == 'add'
        op = float.__add__
        result = 0.0
    for n in numbers:
        result = op(result, n)
    return result


if __name__ == '__main__':
    print(plac.call(main))