python教程 python日期函数实例

在python中对日期进行操作的库有：datetime、time

无论在哪种语言，日期函数肯定是最常用的函数。下面直接上实例代码

#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 09:05:00"
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 09:05:00"
time_strB ="2013-08-29 09:05:00"
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"))

运行结果：

>>>

2013-07-29 09:48:16

2013-07-29

2013-07-29 09:05:00

2013-07-29 09:05:00和2013-08-29 09:05:00相差31天

从今天起的4天的日期是：

2013-08-02 09:48:16

>>>

来源：PY学习网：原文地址：https://www.py.cn/article.html