python计时器类

from time import time as nt


class Timer(object):
    def __init__(self):
        self.starttime = 0.0   #开始时间
        self.pauser = False    #是否处于暂停状态
        self.log1 = 0.0
        self.pautime = 0.0     #暂停期间的时间
        self.log2 = 0.0

    def start(self):    # 开始
        self.starttime = nt()

    def pause(self):   #暂停
        if not self.pauser:
            self.log1 = nt()
            self.pauser = True

    def contin(self):    #继续
        if self.pauser:
            self.pautime += nt() - self.log1
            self.pauser = False

    def time(self):    #程序时间
        if self.pauser:
            return self.log1 - self.starttime - self.pautime
        else:
            return nt() - self.starttime - self.pautime


#  请多多指教