1.將字符串的時間轉換爲時間戳
import time
a = "2018-04-27 17:49:00"
#轉化爲數組
timeArray = time.strptime(a, "%Y-%m-%d %H:%M:%S")
#轉換爲時間戳
timeStamp = int(time.mktime(timeArray))#1524822540
2.字符串格式更改
"""
如a = "2018-04-27 17:49:00",想改爲 a = "2013/04/27 17:49:00"
方法:先轉換爲時間數組,然後轉換爲其他格式
"""
import time
a = "2018-04-27 17:49:00"
timeArray = time.strptime(a, "%Y-%m-%d %H:%M:%S")
otherStyleTime = time.strftime("%Y/%m/%d %H:%M:%S", timeArray)#'2018/04/27 17:49:00'
3.時間戳轉換爲指定格式日期:
方法一:
利用localtime()轉換爲時間數組,然後格式化爲需要的格式,如
import time
timeStamp = 1524822540
timeArray = time.localtime(timeStamp)
otherStyleTime = time.strftime("%Y-%m-%d %H:%M:%S", timeArray)
otherStyletime == "2018-04-27 17:49:00"
方法二:
import datetime
timeStamp = 1524822540
dateArray = datetime.datetime.utcfromtimestamp(timeStamp)
otherStyleTime = dateArray.strftime("%Y-%m-%d %H:%M:%S")
otherStyletime == "2018-04-27 17:49:00"
4.獲取當前時間並轉換爲指定日期格式
方法一:
import time
#獲得當前時間時間戳
now = int(time.time()) #這是時間戳
#轉換爲其他日期格式,如:"%Y-%m-%d %H:%M:%S"
timeArray = time.localtime(now)
otherStyleTime = time.strftime("%Y-%m-%d %H:%M:%S", timeArray)#2018-04-27 18:04:24
方法二:
import datetime
#獲得當前時間
now = datetime.datetime.now() #這是時間數組格式
#轉換爲指定的格式:
otherStyleTime = now.strftime("%Y-%m-%d %H:%M:%S")
5.獲得三天前的時間
方法:
import time
import datetime
#先獲得時間數組格式的日期
threeDayAgo = (datetime.datetime.now() - datetime.timedelta(days = 3))
#轉換爲時間戳:
timeStamp = int(time.mktime(threeDayAgo.timetuple()))
#轉換爲其他字符串格式:
otherStyleTime = threeDayAgo.strftime("%Y-%m-%d %H:%M:%S")#2018-04-24 18:06:37
#注:timedelta()的參數有:days,hours,seconds,microseconds
6.給定時間戳,計算該時間的幾天前時間:
import datetime
import time
timeStamp = 1524822540
#先轉換爲datetime
dateArray = datetime.datetime.utcfromtimestamp(timeStamp)
threeDayAgo = dateArray - datetime.timedelta(days = 3)
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作者：望月歸鄉
來源：CSDN
原文：https://blog.csdn.net/sinat_32546159/article/details/78850479
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