[英]TypeError: string indices must be integers (Text Data Preprocessing in CSV files for Sentiment Analysis)
我對編程和NLP有點新意。 我在這個網站上找到了一些代碼:( https://towardsdatascience.com/creating-the-twitter-sentiment-analysis-program-in-python-with-naive-bayes-classification-672e5589a7ed )用於情緒分析在推特上。 我有我需要的csv文件,因此我只是通過文件定義變量而不是構建它們。
當我嘗試運行代碼時,它在運行此行時給出了類型錯誤:
preprocessedTrainingSet = tweetProcessor.processTweets(trainingData)
並追溯到這條線:
processedTweets.append((self._processTweet(鳴叫[ “文本”]),鳴叫[ “標簽”]))。
我不知道如何規避問題,仍然保持代碼的核心功能完好無損。
import pandas as pd
import re
from nltk.tokenize import word_tokenize
from string import punctuation
from nltk.corpus import stopwords
import twitter
import csv
import time
import nltk
nltk.download('stopwords')
testDataSet = pd.read_csv("Twitter data.csv")
print(testDataSet[0:4])
trainingData = pd.read_csv("full-corpus.csv")
print(trainingData[0:4])
class PreProcessTweets:
def __init__(self):
self._stopwords = set(stopwords.words('english') + list(punctuation) + ['AT_USER','URL'])
def processTweets(self, list_of_tweets):
processedTweets=[]
for tweet in list_of_tweets:
processedTweets.append((self._processTweet(tweet["text"]),tweet["label"]))
return processedTweets
def _processTweet(self, tweet):
tweet = tweet.lower() # convert text to lower-case
tweet = re.sub('((www\.[^\s]+)|(https?://[^\s]+))', 'URL', tweet) # remove URLs
tweet = re.sub('@[^\s]+', 'AT_USER', tweet) # remove usernames
tweet = re.sub(r'#([^\s]+)', r'\1', tweet) # remove the # in #hashtag
tweet = word_tokenize(tweet) # remove repeated characters (helloooooooo into hello)
return [word for word in tweet if word not in self._stopwords]
tweetProcessor = PreProcessTweets()
preprocessedTrainingSet = tweetProcessor.processTweets(trainingData)
preprocessedTestSet = tweetProcessor.processTweets(testDataSet)
我希望它能開始清理我在開始使用朴素貝葉斯之前找到的數據
沒有你的實際數據很難說,但我認為你們互相混淆了多種類型。
我從這個網站下載了一些推文。 通過這些數據,我測試了您的代碼並進行了以下調整。
import pandas as pd
import re
from nltk.tokenize import word_tokenize
from string import punctuation
from nltk.corpus import stopwords
import nltk
#had to install 'punkt'
nltk.download('punkt')
nltk.download('stopwords')
testDataSet = pd.read_csv("data.csv")
# For testing if the code works I only used a TestDatasSet, and no trainingData.
class PreProcessTweets:
def __init__(self):
self._stopwords = set(stopwords.words('english') + list(punctuation) + ['AT_USER','URL'])
# To make it clear I changed the parameter to df_of_tweets (df = dataframe)
def processTweets(self, df_of_tweets):
processedTweets=[]
#turning the dataframe into lists
# in my data I did not have a label, so I used sentiment instead.
list_of_tweets = df_of_tweets.text.tolist()
list_of_sentiment = df_of_tweets.sentiment.tolist()
# using enumerate to keep track of the index of the tweets so I can use it to index the list of sentiment
for index, tweet in enumerate(list_of_tweets):
# adjusted the code here so that it takes values of the lists straight away.
processedTweets.append((self._processTweet(tweet), list_of_sentiment[index]))
return processedTweets
def _processTweet(self, tweet):
tweet = tweet.lower() # convert text to lower-case
tweet = re.sub('((www\.[^\s]+)|(https?://[^\s]+))', 'URL', tweet) # remove URLs
tweet = re.sub('@[^\s]+', 'AT_USER', tweet) # remove usernames
tweet = re.sub(r'#([^\s]+)', r'\1', tweet) # remove the # in #hashtag
tweet = word_tokenize(tweet) # remove repeated characters (helloooooooo into hello)
return [word for word in tweet if word not in self._stopwords]
tweetProcessor = PreProcessTweets()
preprocessedTestSet = tweetProcessor.processTweets(testDataSet)
tweetProcessor = PreProcessTweets()
print(preprocessedTestSet)
希望能幫助到你!
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