new_contents: #!/usr/bin/env python3
  # -*- coding: utf-8 -*-
  
  '第 0003 题：将 0001 题生成的 200 个激活码（或者优惠券）保存到 Redis 非关系型数据库中。'
  
  __author__ = 'Drake-Z'
  
  import redis
  
  def write_to_mysql(filename):
      r = redis.StrictRedis(host='localhost', port=6379, db=0)
      r.flushdb()
      f = open(filename, 'r').readlines()
      for line, num in zip(f, range(1, len(f)+1)):
          line = line[:-1]                     #直接除去最后一个字符的所有字符，这里去除\n符号
          r.set(num, line)
      return 0
  
  def search_mysql():
      b = int(input('查询第几号激活码：'))
      r = redis.StrictRedis(host='localhost', port=6379, db=0)
      print(str(r.get(b),'UTF-8'))
      return 0
  
  if __name__ == '__main__':
      filename = 'active_code.txt'
      write_to_mysql(filename)
      search_mysql()
subject: Fix 0003