Python拓展20(时间模块相关使用集合)

1、获取前一天时间并格式化输出

from datetime import datetime,timedelta
yesterday = datetime.today() + timedelta(-1)
yesterday_str = yesterday.strftime('%Y%m%d')

 2、时间戳转datetime

import datetime
int_time = 1548864000
datetime_time = datetime.datetime.fromtimestamp(int_time)
print datetime_time, type(datetime_time)
# 2019-01-31 00:00:00 <type 'datetime.datetime'>

 3、字符串转datetime对象

  from datetime import datetime

value = '2017/10/7'
datetime.strptime(value, '%Y/%m/%d')

# datetime.datetime(2017, 10, 7, 0, 0)