python - 将诸如“6:02PM”之类的纯时间字符串转换为日期时间对象？

Question

我有一个在 %I:%M%p 中给出的输入（例如“6:02PM”）。我正在尝试输入此代码以找出现在和那时之间的区别：

import datetime

now = datetime.now()
then = "6:02PM"
tdelta = now - then

Answer 1

import datetime as dt

now = dt.datetime.now()
then = dt.datetime.combine(now, dt.datetime.strptime("6:02PM", "%I:%M%p").time())
print(then)
# 2012-08-26 18:02:00

tdelta = now - then
print(tdelta)
# -1 day, 20:53:25.190721