code: def QA_util_random_with_topic(topic='Acc', lens=8):
      
      _list = [chr(i) for i in range(65,
                                     91)] + [chr(i) for i in range(97,
                                                                   123)
                                            ] + [str(i) for i in range(10)]
  
      num = random.sample(_list, lens)
      return '{}_{}'.format(topic, ''.join(num))
docs: 生成account随机值
  
      Acc+4数字id+4位大小写随机