sequence item 0: expected str instance, tuple found(2)

Question

我分析了先例中的数据，并尝试使用主题建模。这里有一个 我正在使用的语法： 根据报错，我认为应该是字符串应该在什么时候进去 加入，但找到了元组。我不知道如何修复这部分。

class FacebookAccessException(Exception): pass
   def get_profile(request, token=None):
    ...
       response = json.loads(urllib_response)
        if 'error' in response:
        raise FacebookAccessException(response['error']['message'])

      access_token = response['access_token'][-1]
      return access_token 
 
    #Join the review
    word_list = ",".join([",".join(i) for i in sexualhomicide['tokens']])
    word_list = word_list.split(",")

这是错误

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
C:\Users\Public\Documents\ESTsoft\CreatorTemp\ipykernel_13792\3474859476.py in <module>
      1 #Join the review
----> 2 word_list = ",".join([",".join(i) for i in sexualhomicide['tokens']])
      3 word_list = word_list.split(",")

C:\Users\Public\Documents\ESTsoft\CreatorTemp\ipykernel_13792\3474859476.py in <listcomp>(.0)
      1 #Join the review
----> 2 word_list = ",".join([",".join(i) for i in sexualhomicide['tokens']])
      3 word_list = word_list.split(",")

TypeError: sequence item 0: expected str instance, tuple found