Python处理时间 time  &&  datetime 模块                  

个人整理，获取时间方式：

import datetimeimport time#获取当前时间：Thu Nov 03 16:40:00 2016print time.strftime("%a %b %d %H:%M:%S %Y", time.localtime())#获取当前时间：2016-11-03 16:40:00print datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')#获取年，月，日：2016-11-03print datetime.date.today()#获取当前时间：2016-11-03 16:43:14.550000print datetime.datetime.now()#不加参数是00:00,参数days=1表示一天:1 day, 0:00:00print datetime.timedelta(days=1)#获取昨天日期：2016-11-02nowtime=datetime.date.today()oldtime=datetime.timedelta(days=1)print(nowtime-oldtime)#获取昨天的精确日期oldtime=datetime.timedelta(days=1)print (datetime.datetime.now() - oldtime)

 python时间处理之time模块：

import time【返回时间戳】print(time.time())【返回当前时间】print(time.ctime())【返回一天前的时间】print(time.ctime(time.time()-86400))【函数返回time.struct_time类型的对象】time_obj = time.gmtime()print(time_obj)结果：time.struct_time(tm_year=2016, tm_mon=7, tm_mday=27, tm_hour=8, tm_min=52, tm_sec=26, tm_wday=2, tm_yday=209, tm_isdst=0)格式化输出：print(time_obj.tm_year,time_obj.tm_mon,time_obj.tm_mday)print("{year}-{month}".format(year=time_obj.tm_year,month=time_obj.tm_mon))【以time.struct_time类型，打印本地时间】print(time.localtime())【转换成时间戳】time_obj = time.gmtime()print(time.mktime(time_obj))【延时2秒】time.sleep(2)【打印UTC，世界标准时间，北京时区是东八区，领先UTC八个小时】print(time.strftime("%Y-%m-%d %H:%M:%S",time.gmtime())) 【本地时间】print(time.strftime("%Y-%m-%d %H:%M:%S",time.localtime())) 【把time.struct_time类型时间，转换成时间戳】tm = time.strptime("2016-05-6 15:06:33","%Y-%m-%d %H:%M:%S")print(tm)print(time.mktime(tm))

python时间处理之datetime模块：

import datetime【打印当前，年，月，日】print(datetime.date.today())【打印当前时间，精确到微秒】current_time = datetime.datetime.now() print(current_time)【转成time.struct_time格式时间】current_time = datetime.datetime.now()print(current_time.timetuple())【加十天】print(datetime.datetime.now() +datetime.timedelta(days=10))【减十天】print(datetime.datetime.now() +datetime.timedelta(days=-10))【减十个小时】print(datetime.datetime.now() +datetime.timedelta(hours=-10))【加120s】print(datetime.datetime.now() +datetime.timedelta(seconds=120))【替换成指定的时间】cr_time = datetime.datetime.now()print(cr_time.replace(2014,9,12))结果：2014-09-12 17:28:17.522893【格式化输出】print(datetime.datetime.strptime("21/11/06 16:30","%d/%m/%y %H:%M"))【替换成指定时间后，类型是
     
      】current_time = datetime.datetime.now()time_obj = current_time.replace(2015,5)print(time_obj,type(time_obj))结果：2015-05-27 17:34:13.350245 
      
       【对比时间大小，取指定时间范围使用】current_time = datetime.datetime.now()time_obj = current_time.replace(2015,5)print(current_time>time_obj)
      
     

       获取昨天的日期          

import datetimedef getYesterday():     today=datetime.date.today()     oneday=datetime.timedelta(days=1)     yesterday=today-oneday      return yesterday# 输出print(getYesterday())