python自制定时器小例子及time模块详解

1. 自制定时器

class Mytimer():
    def __init__(self):
        self.__tips='未开始计时！'
        self.__unit=['年', '月', '日', '小时', '分钟', '秒']
        self.__borrow=[0,12,31,24,60,60]
        self.__lasted = []
        self.__startTime = 0   #千万不要让属性名和方法名重复，属性会覆盖方法定义
        self.__stopTime = 0
        self.__BeginTime=0
    def __str__(self):
        print('str')
        return self.__tips

    def __repr__(self):
        print('repr')
        return self.__tips


    #开始计时
    def start(self):
        if self.__BeginTime == 0:
            self.__startTime = t.localtime()
            self.__BeginTime = 1
            print('开始计时...')
            print(t.localtime())
        else:
            print('您已经开始计时过了!')


    # 停止计时
    def stop(self):
        self.__stopTime = t.localtime()
        if self.__BeginTime==1:
            self.__calcTime()
            self.__BeginTime=0
            print('停止计时...')
            print(t.localtime())
        else :
            print('未开始计时')

    #计算运行时间
    def __calcTime(self):
        self.__lasted =[]
        self.__tips='总共运行了：'
        for index in range(6):
            temp=(self.__stopTime[index]-self.__startTime[index])
            #判断进位:
            if temp<0:
                i=1
                while self.__lasted[index-i]<1:
                    self.__lasted[index-i]+=self.__borrow[index-i]-1
                    i+=1

                self.__lasted.append(self.__borrow[index]+temp)
                self.__lasted[index-i]=self.__lasted[index-i]-1
            else:
                self.__lasted.append(temp)

        for index in range(6):
            if self.__lasted[index] != 0:
                self.__tips += str(self.__lasted[index]) + self.__unit[index]
        print(self.__tips)



    def __add__(self, other):
        time = '总共运行了:'
        result=[]
        for index in range(6):
            result.append(self.__lasted[index] + other.__lasted[index])
            if result[index]:
                time +=str(result[index])+self.__unit[index]
        print(time)
        return time



t1=Mytimer()

t1.start()
n=input('随便写写，拖延时间....\n')

t1.stop()
print('=============\n')
print(t1)

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2. time模块详解

Eg:

import time as t


print(t.localtime())
print(t.process_time())
print(t.strftime("a, %d %b %Y %H:%M:%S +0000", t.localtime()))

详细的请翻看fishc官方论坛：time模块详解