Sentiwordnet ValueError：太多值无法解包（预期2）

Question

以下是我要运行的代码：

tagged=np.array(df['tagged_texts'])
for word, tag in tagged:
    ss_set = None
if 'NN' in tag and swn.senti_synsets(word):
    ss_set = list(swn.senti_synsets(word))[0]
elif 'VB' in tag and swn.senti_synsets(word):
    ss_set = list(swn.senti_synsets(word))[0]
elif 'JJ' in tag and swn.senti_synsets(word):
     ss_set = list(swn.senti_synsets(word))[0]
elif 'RB' in tag and swn.senti_synsets(word):
     ss_set = list(swn.senti_synsets(word))[0]
if ss_set:
    pos=pos+synset.pos_score()
    neg=neg+synset.neg_score()
    obj=obj+synset.obj_score()
    count+=1

错误： ValueError：太多值无法解包（预期2）