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1 .将字符串的时间转换为时间戳 方法: a = "2013-10-10 23:40:00" 将其转换为时间数组 import time timeArray = time.strptime(a, "%Y-%m-%d %H:%M:%S" ) 转换为时间戳: timeStamp = int (time.mktime(timeArray)) timeStamp == 1381419600 |
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2 .字符串格式更改 如a = "2013-10-10 23:40:00" ,想改为 a = "2013/10/10 23:40:00" 方法:先转换为时间数组,然后转换为其他格式 timeArray = time.strptime(a, "%Y-%m-%d %H:%M:%S" ) otherStyleTime = time.strftime( "%Y/%m/%d %H:%M:%S" , timeArray) 3 .时间戳转换为指定格式日期: 方法一: 利用localtime()转换为时间数组,然后格式化为需要的格式,如 timeStamp = 1381419600 timeArray = time.localtime(timeStamp) otherStyleTime = time.strftime( "%Y-%m-%d %H:%M:%S" , timeArray) otherStyletime == "2013-10-10 23:40:00" 方法二: import datetime timeStamp = 1381419600 dateArray = datetime.datetime.utcfromtimestamp(timeStamp) otherStyleTime = dateArray.strftime( "%Y-%m-%d %H:%M:%S" ) otherStyletime == "2013-10-10 23:40:00" 4 .获取当前时间并转换为指定日期格式 方法一: import time 获得当前时间时间戳 now = int (time.time()) ->这是时间戳 转换为其他日期格式,如: "%Y-%m-%d %H:%M:%S" timeArray = time.localtime(timeStamp) otherStyleTime = time.strftime( "%Y-%m-%d %H:%M:%S" , timeArray) 方法二: import datetime 获得当前时间 now = datetime.datetime.now() ->这是时间数组格式 转换为指定的格式: otherStyleTime = now.strftime( "%Y-%m-%d %H:%M:%S" ) 5 .获得三天前的时间 方法: import time import datetime 先获得时间数组格式的日期 threeDayAgo = (datetime.datetime.now() - datetime.timedelta(days = 3 )) 转换为时间戳: timeStamp = int (time.mktime(threeDayAgo.timetuple())) 转换为其他字符串格式: otherStyleTime = threeDayAgo.strftime( "%Y-%m-%d %H:%M:%S" ) 注:timedelta()的参数有:days,hours,seconds,microseconds 6 .给定时间戳,计算该时间的几天前时间: timeStamp = 1381419600 先转换为datetime import datetime import time dateArray = datetime.datetime.utcfromtimestamp(timeStamp) threeDayAgo = dateArray - datetime.timedelta(days = 3 ) 参考 5 ,可以转换为其他的任意格式了 |
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原文地址:http://www.cnblogs.com/apexchu/p/4236048.html