python 获取当天凌晨零点的时间戳方法

最近写python，遇到了一个问题，需要获取当日凌晨零点的时间戳，网上实在没有找到，自己手写了一个，有点挫

# -*- coding:utf-8 -*- 
import time 
 
now_time = int(time.time()) 
day_time = now_time - now_time % 86400 + time.timezone 
day_time_str = time.asctime(time.localtime(day_time)) 
print day_time 
print day_time_str 
 
import datetime 
today = datetime.date.today() 
today_time = int(time.mktime(today.timetuple())) 
print today_time

输出如下：

1518105600

Fri Feb 9 00:00:00 2018

1518105600