python 时间戳、时间字符串、时间对象以及时间加减处理

 1 import time
 2 import datetime
 3 
 4 
 5 # 时间字符串加8小时
 6 timestring = "2019-12-21 10:22:56"
 7 # 转为时间戳
 8 timestamp = time.mktime(time.strptime(timestring, '%Y-%m-%d %H:%M:%S'))
 9 print timestamp  # 1576894976.0
10 
11 datetime_struct = datetime.datetime.fromtimestamp(timestamp)
12 print type(datetime_struct)  # <type 'datetime.datetime'>
13 
14 datetime_obj = (datetime_struct + datetime.timedelta(hours=8))
15 print datetime_obj  # 2019-12-21 18:22:56  <type 'datetime.datetime'>
16 
17 datetime_str = datetime_obj.strftime('%Y-%m-%d %H:%M:%S')
18 print datetime_str  # 2019-12-21 18:22:56  <type 'str'>