如何估计时间戳

Question

I have a list of time stamps with milliseconds like 10:35:08.23562515422 . Now in the milliseconds, I want to have only first 3 values in the list like 10:35:08:235 . Is there a way to do it?

Answer 1

>>> from datetime import datetime

>>> timestamps = ['10:35:08.23562515422', '10:35:08.24862517422', '10:35:08.31060347422', '10:35:15.00860347422']

>>> for time in timestamps:
...     dt = datetime.strptime(time[:-8], '%H:%M:%S.%f')
...     print datetime.strftime(dt, '%H:%M:%S.%f')[:-3]

10:35:08.235
10:35:08.248
10:35:08.310
10:35:15.008

Answer 2

假设小时，分钟和秒始终都是两位数（它们应该是两位数），这很简单：

timestamp = timestamp[:12]