def main():
    coro = adder()
    next(coro)  # prime it
    if len(sys.argv) > 1:
        res = process_args(coro, sys.argv[1:])
    else:
        res = prompt(coro)
    print(res)
dataset/ETHPy150Open fluentpython/example-code/attic/control/adder/yetanother.py/main/original