Python中datetime常用时间处理方法
常用时间转换及处理函数:
import datetime # 获取当前时间 d1 = datetime.datetime.now() print d1 # 当前时间加上半小时 d2 = d1 + datetime.timedelta(hours=0.5) print d2 # 格式化字符串输出 d3 = d2.strftime('%Y-%m-%d %H:%M:%S') print d3 # 将字符串转化为时间类型 d4 = datetime.datetime.strptime(date,'%Y-%m-%d %H:%M:%S.%f') print d4
获取本周和本月第一天的日期:
# -*- coding:utf-8 -*- import datetime def first_day_of_month(): ''' 获取本月第一天 :return: ''' # now_date = datetime.datetime.now() # return (now_date + datetime.timedelta(days=-now_date.day + 1)).replace(hour=0, minute=0, second=0, # microsecond=0) return datetime.date.today() - datetime.timedelta(days=datetime.datetime.now().day - 1) def first_day_of_week(): ''' 获取本周第一天 :return: ''' return datetime.date.today() - datetime.timedelta(days=datetime.date.today().weekday()) if __name__ == "__main__": this_week = first_day_of_week() last_week = this_week - datetime.timedelta(days=7) this_month = first_day_of_month() last_month = this_month - datetime.timedelta(days=(this_month - datetime.timedelta(days=1)).day) print this_week print last_week print this_month print last_month
#! /usr/bin/python # coding=utf-8 import datetime """ datetime的功能强大 能支持0001年到9999年 """ """ 当前时间 返回的是一个datetime类型 now方法有个参数tz,设置时区类型。如果没有和方法today的效果一样 """ now = datetime.datetime.now() #UTC时间 datetime.datetime.utcnow() attrs = [ ("year","年"),('month',"月"),("day","日"),('hour',"小时"),( 'minute',"分"),( 'second',"秒"),( 'microsecond',"毫秒"),( 'min',"最小"),( 'max',"最大"), ] for k,v in attrs: "now.%s = %s #%s" % (k,getattr(now, k),v) """ 返回一个time结构 """ now.timetuple() """ 返回一个date类型 """ now.date() """ 返回一个time类型 """ now.time() """ 当前星期几。星期一是0,星期于是6 注意这里是方法,不是属性哦。 """ now.weekday() """ 当前星期几。星期一是1,星期于是7 注意这里是方法,不是属性哦。 """ now.isoweekday() """ 修改当前时间。比如修改成当月1号 """ now.replace(day=1) past = datetime.datetime(2010,11,12,13,14,15,16) """ 进行比较运算 返回的是timedelta类型 """ now-past """ 转成字符串 详细规则见Time篇 """ strdatetime = now.strftime("%Y-%m-%d %H:%M:%S") """ 字符串生成datetime对象 """ datetime.datetime.strptime(strdatetime, "%Y-%m-%d %H:%M:%S")
以上所述就是本文的全部内容了,希望大家能够喜欢。

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Regarding the problem of removing the Python interpreter that comes with Linux systems, many Linux distributions will preinstall the Python interpreter when installed, and it does not use the package manager...

Pylance type detection problem solution when using custom decorator In Python programming, decorator is a powerful tool that can be used to add rows...

About Pythonasyncio...

Using python in Linux terminal...

Loading pickle file in Python 3.6 environment error: ModuleNotFoundError:Nomodulenamed...

Compatibility issues between Python asynchronous libraries In Python, asynchronous programming has become the process of high concurrency and I/O...

Error loading Pickle file in Python 3.6 environment: ModuleNotFoundError:Nomodulenamed...

The problem and solution of the child process continuing to run when using signals to kill the parent process. In Python programming, after killing the parent process through signals, the child process still...
