python中时间、日期、时间戳的转换

在编写代码时，往往涉及时间、日期、时间戳的相互转换,常用的几种，接下来概要说一下。

导入模块

# 导入模块 import time, datetime

1、str类型的日期转换为时间戳

import time,datetime # 字符类型的时间 tss1 = '2019-10-31 11:40:00' # 转为时间数组 timeArray = time.strptime(tss1, "%Y-%m-%d %H:%M:%S") print(timeArray) # timeArray可以调用tm_year等 print(timeArray.tm_year) # 2019 # 转为时间戳 timeStamp = int(time.mktime(timeArray)) print(timeStamp) # 1572493200

显示结果如下

time.struct_time(tm_year=2019, tm_mon=10, tm_mday=31, tm_hour=11, tm_min=40, tm_sec=0, tm_wday=3, tm_yday=304, tm_isdst=-1) 2019 1572493200

2、更改str类型日期的显示格式

import time,datetime tss2 = "2019-10-31 11:40:00" # 转为数组 timeArray = time.strptime(tss2, "%Y-%m-%d %H:%M:%S") # 转为其它显示格式 otherStyleTime = time.strftime("%Y/%m/%d %H:%M:%S", timeArray) print (otherStyleTime) # 2019/10/31 11:40:00 tss3 = "2019/10/31 11:40:00" timeArray = time.strptime(tss3, "%Y/%m/%d %H:%M:%S") otherStyleTime = time.strftime("%Y-%m-%d %H:%M:%S", timeArray) print (otherStyleTime) # 2019-10-31 11:40:00

3、时间戳转换为指定格式的日期

import time,datetime # 使用time timeStamp = 1572493200 timeArray = time.localtime(timeStamp) otherStyleTime = time.strftime("%Y--%m--%d %H:%M:%S", timeArray) print (otherStyleTime) # 2019--10--31 11:40:00 # 使用datetime timeStamp = 1572493200 dateArray = datetime.datetime.utcfromtimestamp(timeStamp) otherStyleTime = dateArray.strftime("%Y--%m--%d %H:%M:%S") print (otherStyleTime) # 2019--10--31 11:40:00

4、获取当前时间并且用指定格式显示

import time,datetime # time获取当前时间戳 now = int(time.time()) # 1533952277 timeArray = time.localtime(now) print(timeArray) # time.struct_time(tm_year=2019, tm_mon=10, tm_mday=31, tm_hour=11, tm_min=45, tm_sec=56, tm_wday=3, tm_yday=304, tm_isdst=0) otherStyleTime = time.strftime("%Y--%m--%d %H:%M:%S", timeArray) print(otherStyleTime) # 2019--10--31 11:45:56 # datetime获取当前时间，数组格式 now = datetime.datetime.now() print(now) # 2019-10-31 11:45:56.529454 otherStyleTime = now.strftime("%Y--%m--%d %H:%M:%S") print(otherStyleTime) # 2019--10--31 11:45:56