Python 入门之 内置模块 -- datetime模块

Python 入门之 内置模块 -- datetime模块

1、datetime模块

from datetime import datetime

(1)datetime.now() 获取当前时间和日期

print(datetime.now())  # 获取当前时间

(2)获取指定时间和日期

dt = datetime(2018,5,20,13,14)
print(dt)

(3)指定时间

current_time = datetime.datetime.now()
print(current_time.replace(year=1977))  # 直接调整到1977年
print(current_time.replace(month=1))  # 直接调整到1月份
print(current_time.replace(year=1989,month=4,day=25))  # 1989-04-25 18:49:05.898601

(4)求时间差

print(datetime(2018,10,1,10,11,12) - datetime(2011,11,1,20,10,10))

(5)datetime.timestamp() 将对象转换成时间戳

d = datetime.now()
print(d.timestamp())

(6)datetime.fromtimestamp() 将时间戳转换为对象

import time
f_t = time.time()
print(datetime.fromtimestamp(f_t))

(7)datetime.strftime 将对象转换成字符串

d = datetime.now()
print(d.strftime("%Y-%m-%d %H:%M:%S"))

(8)datetime.strptime 将字符串转换成对象

s = "2018-12-31 10:11:12"
print(datetime.strptime(s,"%Y-%m-%d %H:%M:%S"))

(9)可以进行加减运算

from datetime import datetime,timedelta
print(datetime.now() - timedelta(days=1))
print(datetime.now() - timedelta(hours=1))

转载于:https://www.cnblogs.com/caiyongliang/p/11490818.html

你可能感兴趣的:(Python 入门之 内置模块 -- datetime模块)