不幸的是,没有内置的方法可以从字符串(如对象)构造时间增量strptime()
,datetime
所以我们必须构建一个解析器:
>>> from datetime import timedelta
>>> import re
>>> def interval(s):
"Converts a string to a timedelta"
d = re.match(r'((?P<days>\d+) days, )?(?P<hours>\d+):'
r'(?P<minutes>\d+):(?P<seconds>\d+)', str(s)).groupdict(0)
return timedelta(**dict(((key, int(value)) for key, value in d.items())))
>>> times = ["16:35:21", "8:23:14"]
>>> print sum([interval(time) for time in times])
1 day, 0:58:35
编辑:旧的错误答案(我误读了问题):
如果你减去日期时间,你会得到一个timedelta对象:
>>> import datetime as dt
>>> times = ["16:35:21", "8:23:14"]
>>> fmt = '%H:%M:%S'
>>> start = dt.datetime.strptime(times[1], fmt )
>>> end = dt.datetime.strptime(times[0], fmt)
>>> diff = (end - start)
>>> diff.total_seconds()
29527.0
>>> (diff.days, diff.seconds, diff.microseconds)
(0, 29527, 0)
>>> print diff
8:12:07