1.將字符串的時間轉(zhuǎn)換為時間戳
方法:
a = "2013-10-10 23:40:00"
將其轉(zhuǎn)換為時間數(shù)組
import time
timeArray = time.strptime(a, "%Y-%m-%d %H:%M:%S")
轉(zhuǎn)換為時間戳:
timeStamp = int(time.mktime(timeArray))
timeStamp == 1381419600
2.字符串格式更改
如a = "2013-10-10 23:40:00",想改為 a = "2013/10/10 23:40:00"
方法:先轉(zhuǎn)換為時間數(shù)組,然后轉(zhuǎn)換為其他格式
timeArray = time.strptime(a, "%Y-%m-%d %H:%M:%S")
otherStyleTime = time.strftime("%Y/%m/%d %H:%M:%S", timeArray)
3.時間戳轉(zhuǎn)換為指定格式日期:
方法一:
利用localtime()轉(zhuǎn)換為時間數(shù)組,然后格式化為需要的格式,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.獲取當前時間并轉(zhuǎn)換為指定日期格式
方法一:
import time
獲得當前時間時間戳
timeStamp = int(time.time()) ->這是時間戳
轉(zhuǎn)換為其他日期格式,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
獲得當前時間
now = datetime.datetime.now() ->這是時間數(shù)組格式
轉(zhuǎn)換為指定的格式:
otherStyleTime = now.strftime("%Y-%m-%d %H:%M:%S")
5.獲得三天前的時間
方法:
import time
import datetime
先獲得時間數(shù)組格式的日期
threeDayAgo = (datetime.datetime.now() - datetime.timedelta(days = 3))
轉(zhuǎn)換為時間戳:
timeStamp = int(time.mktime(threeDayAgo.timetuple()))
轉(zhuǎn)換為其他字符串格式:
otherStyleTime = threeDayAgo.strftime("%Y-%m-%d %H:%M:%S")
注:timedelta()的參數(shù)有:days,hours,seconds,microseconds
6.給定時間戳,計算該時間的幾天前時間:
timeStamp = 1381419600
先轉(zhuǎn)換為datetime
import datetime
import time
dateArray = datetime.datetime.utcfromtimestamp(timeStamp)
threeDayAgo = dateArray - datetime.timedelta(days = 3)
參考5,可以轉(zhuǎn)換為其他的任意格式了
