parsing_opts.py 文件源码

def match_time_unit(val):
    '''match some val against time shortcut inputs '''
    match = re.match("^(\d+(\.\d+)?)([m|h]?)$", val)
    if match:
        digit = float(match.group(1))
        unit = match.group(3)
        if not unit:
            return digit
        elif unit == 'm':
            return digit*60
        else:
            return digit*60*60
    else:
        raise argparse.ArgumentTypeError("Duration should be passed in the following format: \n"
                                         "-d 100 : in sec \n"
                                         "-d 10m : in min \n"
                                         "-d 1h  : in hours")