我删除了所有我认为可能会导致错误的特殊字符。仍然不断收到我无法弄清楚的错误：

python3 sentiment.py
Traceback (most recent call last):
  File "sentiment.py",line 14,in <module>
    score = sentiment.polarity_scores(headline)
  File "/library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/nltk/sentiment/vader.py",line 360,in polarity_scores
    sentitext = SentiText(text,self.constants.PUNC_LIST,File "/library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/nltk/sentiment/vader.py",line 270,in __init__
    text = str(text.encode("utf-8"))
AttributeError: 'float' object has no attribute 'encode'

这是我所拥有的：

import nltk
from nltk.sentiment.vader import SentimentIntensityAnalyzer
import pandas as pd
from pandas import DataFrame
import numpy as np

sentiment = SentimentIntensityAnalyzer()

testset = pd.read_csv("cnns.csv")

Result = { 'pos':[],'neg':[],'compound':[],'neu':[] }

for headline in testset['Title']:
    score = sentiment.polarity_scores(headline)
    Result['pos'].append(score['pos'])
    Result['neu'].append(score['neu'])
    Result['neg'].append(score['neg'])
    Result['compound'].append(score['compound'])

testset['pos'] = pd.DataFrame(Result)['pos']
testset['neu'] = pd.DataFrame(Result)['neu']
testset['neg'] = pd.DataFrame(Result)['neg']
testset['compound'] = pd.DataFrame(Result)['compound']

testset.to_csv('cnn.csv',index=False)

如果有人知道如何解决或解决此问题，将不胜感激。预先谢谢你！

.csv文件的示例：

Date,Title
04/21/2012,Tao Girls Taobao Chinese Shopping Site To Offer Model Delivery Service
04/21/2012,Giant George The Biggest Dog In The World PHOTOS
04/21/2012,Tiny Hands at Work Before Their Time
04/21/2012,James Van Der Beek I Would Never Do Dancing With The Stars
04/21/2012,Supernatural Recap Bobby Returns in Of Grave Importance
04/21/2012,Nikita Recap Of Wrath Nikita Embraces Her Dark Side
04/21/2012,Celebrity Photos Of The Week Coachella And Baby Bumps PHOTOS
04/21/2012,Hilary Duff Post Baby Body actress Looks Great One Month After Giving Birth PHOTOS
04/21/2012,Kim Kardashian Without Makeup Kris Jenner Tweets Creepy Photo Of Kim Sleeping PHOTOS
04/22/2012,International Stolen Asset Recovery As a Development Issue   A World Bank Presidents Legacy
04/22/2012,Poetry Helps the Healing After the Fukushima Disaster
04/22/2012,France Election Results 2012 Hollande Sarkozy Advance To Runoff Far Right Gets 20 Percent
04/22/2012,Jennifer Connelly Blonde For New Movie Virginia WATCH
04/22/2012,Cybill Shepherds Polka Dot Tie 1971 A Look Back
04/22/2012,American Idol What They Wore 4/18/12 Top 7 Redux