python情感分析

哪位大神救救孩子，为什么我下面这段代码结果一直是0.5：fromsnownlpimportSnowNLPdefsentimentStr(s):snowstr=SnowNLP(s)senti_score=[]foriinsnowstr.sentences:a1=SnowNLP(i)a2=a1... 哪位大神救救孩子，为什么我下面这段代码结果一直是0.5：
from snownlp import SnowNLP
def sentimentStr(s):
snowstr=SnowNLP(s)
senti_score = []
for i in snowstr.sentences:
a1=SnowNLP(i)
a2=a1.sentiments
senti_score.append(a2)
return(senti_score) 展开