本文共 1236 字，大约阅读时间需要 4 分钟。

import rarfileimport randomimport timeimport sysclass MyIterator():    # 单位字符集合    letters = '0123456789'    min_digits = 0    max_digits = 0    def __init__(self, min_digits, max_digits):        # 实例化对象时给出密码位数范围，一般4到10位        if min_digits < max_digits:            self.min_digits = min_digits            self.max_digits = max_digits        else:            self.min_digits = max_digits            self.max_digits = min_digits    # 迭代器访问定义    def __iter__(self):        return self    def __next__(self):        rst = str()        for item in range(0, random.randrange(self.min_digits, self.max_digits + 1)):            rst += random.choice(MyIterator.letters)        return rstdef extract():    start_time = time.time()    zfile = rarfile.RarFile("D:\\deng\\logs\\datastruture.rar")    # 解压文件名字    for p in MyIterator(4, 10):        try:            zfile.extractall(path=".", pwd=str(p).encode('utf-8'))            # 文件地址这里用.说明当前文件夹，如果C:\Users这样形式            print("the password is {}".format(p))            now_time = time.time()            print("spend time is {}".format(now_time - start_time))            sys.exit(0)        except Exception as e:            print('error',p)            passif __name__ == '__main__':    extract()

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