#-*- coding: utf-8 -*- import datetime#給定日期向后N天的日期 def dateadd_day(days):d1 = datetime.datetime.now()d3 = d1 + datetime.timedelta(days)return d3#昨天 def getYesterday():today = datetime.date.today()oneday = datetime.timedelta(days=1)yesterday = today - onedayreturn yesterday#今天 def getToday():return datetime.date.today()#獲取給定參數(shù)的前幾天的日期，返回一個(gè)list def getDaysBefore(num):today = datetime.date.today()oneday = datetime.timedelta(days=1)li = []for i in range(0, num):#今天減一天，一天一天減today = today - oneday#把日期轉(zhuǎn)換成字符串 li.append(datetostr(today))return li#將字符串轉(zhuǎn)換成datetime類型 def strtodatetime(datestr, format):return datetime.datetime.strptime(datestr, format)#時(shí)間轉(zhuǎn)換成字符串,格式為2015-02-02 def datetostr(date):return str(date)[0:10]#時(shí)間轉(zhuǎn)換成字符串,格式為2015-02-02 def datetostr_secod(date):return str(date)[0:19]#兩個(gè)日期相隔多少天，例：2015-2-04和2015-3-1 def datediff(beginDate, endDate):format = "%Y-%m-%d"bd = strtodatetime(beginDate, format)ed = strtodatetime(endDate, format)oneday = datetime.timedelta(days=1)count = 0while bd != ed:ed = ed - onedaycount += 1return count#兩個(gè)日期之間相差的秒 def datediff_seconds(beginDate, endDate):format = "%Y-%m-%d %H:%M:%S"if " " not in beginDate or ':' not in beginDate:bformat = "%Y-%m-%d"else:bformat = formatif " " not in endDate or ':' not in endDate:eformat = "%Y-%m-%d"else:eformat = formatstarttime = strtodatetime(beginDate, bformat)endtime = strtodatetime(endDate, eformat)ret = endtime - starttimereturn ret.days * 86400 + ret.seconds#獲取兩個(gè)時(shí)間段的所有時(shí)間,返回list def getDays(beginDate, endDate):format = "%Y-%m-%d"begin = strtodatetime(beginDate, format)oneday = datetime.timedelta(days=1)num = datediff(beginDate, endDate) + 1li = []for i in range(0, num):li.append(datetostr(begin))begin = begin + onedayreturn li#獲取當(dāng)前年份 是一個(gè)字符串 def getYear(date=datetime.date.today()):return str(date)[0:4]#獲取當(dāng)前月份 是一個(gè)字符串 def getMonth(date=datetime.date.today()):return str(date)[5:7]#獲取當(dāng)前天 是一個(gè)字符串 def getDay(date=datetime.date.today()):return str(date)[8:10]#獲取當(dāng)前小時(shí) 是一個(gè)字符串 def getHour(date=datetime.datetime.now()):return str(date)[11:13]#獲取當(dāng)前分鐘 是一個(gè)字符串 def getMinute(date=datetime.datetime.now()):return str(date)[14:16]#獲取當(dāng)前秒 是一個(gè)字符串 def getSecond(date=datetime.datetime.now()):return str(date)[17:19]def getNow():return datetime.datetime.now()print dateadd_day(10) #2015-02-14 16:41:13.275000print getYesterday() #2015-02-03print getToday() #2015-02-04print getDaysBefore(3) #['2015-02-03', '2015-02-02', '2015-02-01']print datediff('2015-2-01', '2015-10-05') #246print datediff_seconds('2015-02-04', '2015-02-05') #86400print datediff_seconds('2015-02-04 22:00:00', '2015-02-05') #7200print getDays('2015-2-03', '2015-2-05') #['2015-02-03', '2015-02-04', '2015-02-05']print datetostr_secod(getNow()) #2015-02-04 16:46:47print str(getYear(dateadd_day(-50))) + '-'\+ getMonth() + '-'\+ getDay() + ' '\+ getHour() + ':'\+ getMinute() + ':'\+ getSecond() #2014-02-04 16:59:04print getNow() #2015-02-04 16:46:47.454000

備用

轉(zhuǎn)載于:https://www.cnblogs.com/lurenjiashuo/p/python-date-time-demo.html

總結(jié)

以上是生活随笔為你收集整理的python学习笔记十五：日期时间处理笔记的全部?jī)?nèi)容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網(wǎng)站內(nèi)容還不錯(cuò)，歡迎將生活随笔推薦給好友。