python利用itertools生成密码字典并多线程撞库破解rar密码

#!/usr/bin/env python
# -*- coding: UTF-8 -*-
# Author:Leslie-x
import itertools as its
import threading
import rarfile
import os
words = '0123456789abcdefghijklmnopqrstuvwxyz' # 涉及到生成密码的参数
flag = True # 是否关闭线程的标志

def append_on_file(password,file_name):
  # 把解析出的密码写入到文件中
  with open('password.txt', 'a', encoding='utf8') as f:
    text = file_name+':'+password + '\n'
    f.write(text)
def get_password(min_digits, max_digits, words):
  """
  :param min_digits: 密码最小长度
  :param max_digits: 密码最大长度
  :param words: 密码可能涉及的字符
  :return: 密码生成器
  """
  while min_digits <= max_digits:
    pwds = its.product(words, repeat=min_digits)
    for pwd in pwds:
      yield ''.join(pwd)
    min_digits += 1
def extract(File,file_name):
  """
  若线程关闭标志为True，就执行循环，从密码生成器中取出密码，验证密码是否正确
  密码正确，则把密码写入文件中，并将线程关闭标志flag设定为False,通知其他线程关闭
  """
  global flag
  while flag:
    p = next(passwords)
    try:
      File.extractall(pwd=p) # 打开压缩文件,提供密码...
      flag = False
      print("password is " + p) ###破解到密码
      append_on_file(p,file_name)
      break
    except:
      print(p)
def mainStep(file_path,file_name):
  """
  多线程并发验证密码
  :param file_path: rar压缩文件路径列表
  :return:
  """
  file = rarfile.RarFile(file_path)
  for pwd in range(3):
    t = threading.Thread(target=extract, args=(file,file_name))
    t.start()
if __name__ == '__main__':
  # 主程序
  base_dir = r'E:\迅雷下载\rar'
  for file_info in os.listdir(base_dir):
    try:
      # 拼接压缩文件路径
      file_path = os.path.join(base_dir, file_info)
      # 压缩文件名称
      file_name = file_info.split('.')[0]
      # 生成密码字典：密码长度最小为4，最大为11
      passwords = get_password(4, 11, words)
      # 将任务分发给线程执行
      mainStep(file_path,file_name)
    except:
      pass