datatime模块

import datetime
import time

astime = '2019-07-17 08:21:05'
# 求 astime 5h后的时间
# 1.转成时间戳  2.datetime.datetime.fromtimestamp(int(时间戳)) + datetime.timedelta(hours=10)  int时间戳因为不需要毫秒

astime_timestamp = time.mktime(time.strptime(astime,'%Y-%m-%d %H:%M:%S'))  # 转成时间戳
print(astime_timestamp) #1563322865.0
res = datetime.datetime.fromtimestamp(int(astime_timestamp)) + datetime.timedelta(hours=10) #当前时间+10小时
print(res) #2019-07-17 18:21:05
print(type(res)) #<class 'datetime.datetime'>
#要想变成对应字符串要str强转一下

---

判断是不是周几：

astime_timestamp = time.mktime(time.strptime('2019-08-04 08:21:05','%Y-%m-%d %H:%M:%S'))  # 转成时间戳

res = datetime.datetime.fromtimestamp(int(astime_timestamp)) + datetime.timedelta(hours=10) #当前时间+10小时
print(res) #2019-07-17 18:21:05

print(res.weekday()+1) #7 周日    datetime对象.weekday() 返回周几