Python 3.3实现计算两个日期间隔秒数/天数的方法示例

> import datetime
> d1 = datetime.datetime.now()
> d2 = datetime.datetime.now()
> interval = d2 - d1
> interval
datetime.timedelta(0, 14, 670206)
> sec = interval.days*24*3600 + interval.seconds
> sec
14
> total_sec = interval.total_seconds()
> total_sec
14.670206
>

> d1 = datetime.datetime(2016,8,10,10,20,30)
> d2 = datetime.datetime(2016,8,10,10,30,30)
> interval = d2 - d1
> interval
datetime.timedelta(0, 600)
> sec = interval.days*24*3600 + interval.seconds
> sec
600
>

> import time
> start_date = '2017-06-01'
> end_date = '2017-06-05'
> start_sec = time.mktime(time.strptime(start_date,'%Y-%m-%d'))
> end_sec = time.mktime(time.strptime(end_date,'%Y-%m-%d'))
> work_days = int((end_sec - start_sec)/(24*60*60))
> work_days
4
>