stats.py 文件源码

def main(argv=None):
    if argv is None:
        argv = sys.argv

    parser = ArgumentParser('Report mean and standard deviation for the stream of numbers read from stdin',
                            formatter_class=ArgumentDefaultsHelpFormatter)
    args = parser.parse_args(argv[1:])

    stats = Stats()
    for line in sys.stdin:
        stats(float(line))
    print(stats)