本文实例讲述了python编程开发之日期操作。分享给大家供大家参考,具体如下:
在python中对日期进行操作的库有:
import datetime
import time
对日期格式化信息,可以参考官方API:
time.strftime
datetime
下面是我做的demo:
#datetime import datetime #当前日期 now = datetime.datetime.now() print(now.strftime('%Y-%m-%d %H:%M:%S')) print(now.strftime('%Y-%m-%d')) #string convert to datetime time_str = '2013-07-29 01:05:00' str_convert_2_time = datetime.datetime.strptime(time_str, '%Y-%m-%d %H:%M:%S') print(str_convert_2_time) #比较两个日期相差多少天 time_strA = '2013-07-29 01:05:00' time_strB ='2013-08-29 01:05:00' day = datetime.datetime.strptime(time_strA, '%Y-%m-%d %H:%M:%S') day2 = datetime.datetime.strptime(time_strB, '%Y-%m-%d %H:%M:%S') sub_day = day2 - day print('{0}和{1}相差{2}天'.format(time_strA, time_strB, str(sub_day.days))) #今后的n天的日期 n_days = 4 now = datetime.datetime.now() my_date = datetime.timedelta(days=n_days) n_day = now + my_date print('从今天起的{0}天的日期是:'.format(n_days)) print(n_day.strftime('%Y-%m-%d %H:%M:%S'))
运行效果:
Python 3.3.2 (v3.3.2:d047928ae3f6, May 16 2013, 00:03:43) [MSC v.1600 32 bit (Intel)] on win32 Type "copyright", "credits" or "license()" for more information. >>> ================================ RESTART ================================ >>> 2013-07-29 01:48:16 2013-07-29 2013-07-29 01:05:00 2013-07-29 01:05:00和2013-08-29 01:05:00相差31天 从今天起的4天的日期是: 2013-08-02 01:48:16 >>>
希望本文所述对大家Python程序设计有所帮助。