python - 用 Python 解析 'time string'？

Question

我正在编写一个应用程序，让用户按以下格式输入时间:

1m30s # 1 Minute,  30 Seconds

3m15s # 3 Minutes, 15 Seconds

2m25s # 2 Minutes, 25 Seconds

2m    # 2 Minutes

55s   # 55 Seconds

数据可以有一个“分钟名称”，一个“秒名称”，或两者兼而有之。将这些字符串解析为类似于以下格式的正确方法是什么:

{
    "minutes" : 3
    "seconds" : 25
}

Answer 1

import re

tests=['1m30s','3m15s','2m25s','2m','55s']
for time_str in tests:
    match=re.match('(?:(\d*)m)?(?:(\d*)s)?',time_str)
    if match:
        minutes = int(match.group(1) or 0)
        seconds = int(match.group(2) or 0)
        print({'minutes':minutes,
               'seconds':seconds})

# {'seconds': 30, 'minutes': 1}
# {'seconds': 15, 'minutes': 3}
# {'seconds': 25, 'minutes': 2}
# {'seconds': 0, 'minutes': 2}
# {'seconds': 55, 'minutes': 0}