import time as tm

class MyTimer():
'''我的计时器bykc20170702'''
    def __init__(self):
        self.begin = False
        self.end = False
        self.time = {"start":[],"end":[],"cost":[]}
        self.info = "init"
        self.unit = ["年","月","日","时","分","秒"]

    def __str__(self):
        if not self.begin:
            return "未开始计时呢"
        elif not self.end:
            return "需要停止计时"
        return self.info # 打印计时时间

    __repr__ = __str__
    
    def reset(self):
        '''重置'''
        pass
        
    def start(self):
        '''开始计时'''
        if self.begin:
            print("计时器计时中，请stop()停止后操作")
            return None
        self.begin = True
        self.time["start"] = tm.localtime()
        print("开始计时...")

    def stop(self):
        '''停止计时'''
        if not self.begin:
            print("计时器未计时，请先start()开始后操作")
            return None
        self.end = True
        self.time["end"] = tm.localtime()
        self._calc()
        print("结束计时...")

    def _calc(self):
        '''内部计算方法'''
        for index in range(6):
            tmp = self.time["end"][index]-self.time["start"][index];
            self.time["cost"].append(tmp)
            self.info = "计时器运行了："
            if tmp:
                self.info += (str(tmp) + self.unit[index])
        
        # 重置
        self.begin = False
        self.end = False