import random,zipfile,time,sys,threading#定义一个类，可以随机生成一个范围内的密码，并可以迭代class Dictor():    pSet = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'    #pSet = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789~!@#$%^&*()_-+=/*<>:;\'"[]{}|'    def __init__(self,minlen,maxlen):        if maxlen>minlen:            self.__maxlen = maxlen            self.__minlen = minlen        else:            self.__maxlen = minlen            self.__minlen = maxlen    def __iter__(self):        return self    #生成一个某个长度范围内的密码    def __next__(self):        ret = ''        for i in range(0,random.randrange(self.__minlen,self.__maxlen+1)):            ret += random.choice(Dictor.pSet)        return ret#定义成功标志位success = False#定义解压函数def extract_file(file, pwd):    global success    zfile = zipfile.ZipFile(file)    try:        zfile.extractall(path=r'C:\Users\Damon\Desktop',pwd=pwd.encode('utf-8'))        success = True        print('当前文件的密码为%s' %pwd)        sys.exit()    except Exception as e:        pass        #print(e)#多线程破解密码def main():    time1 = time.time()    index = 1    for pwd in Dictor(2,2):        if not success:            t = threading.Thread(target=extract_file,args=(r'C:\Users\Damon\Desktop\1.zip',pwd))            t.start()            t.join()            print('第%d个线程' %index)            index += 1        else:            time2 = time.time()            print('多线程本次破解的密码的时间花费为%s' %str(time2-time1))            breakif __name__ == '__main__':    main()