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 timetimeArray = time.strptime(a, "%Y-%m-%d %H:%M:%S")#转换为时间戳:timeStamp = int(time.mktime(timeArray))timeStamp == 1381419600
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 = 1381419600timeArray = time.localtime(timeStamp)otherStyleTime = time.strftime("%Y-%m-%d %H:%M:%S", timeArray)otherStyletime == "2013-10-10 23:40:00" 方法二:
import datetimetimeStamp = 1381419600dateArray = 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 timeimport 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datetimeimport datetimeimport timedateArray = 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。