Question

我正在编写电影情感分析，在代码中我得到一个错误，即：带有基数10的int（）的无效文字。代码读取包含电影评论及其分数的单独文本文件。 ex）4这部电影很棒。谢谢您的帮助！编辑：错误出现在这里：第38行得分= int（lineSplits [0] .strip（））

import re
class WordStatistic:
    def __init__(self, keyword, averageScore = 0, occurences = 0):
        self.keyword = keyword
        self.averageScore = averageScore
        self.occurences = occurences

    def getWord(self) :
        return self.keyword

    def getAverageScore(self) :
        return self.averageScore

    def getOccurences(self) :
        return self.occurences

    def addNewScore(self, newScore) :
        oldScoreSum = self.averageScore * self.occurences
        self.occurences = self.occurences + 1
        self.averageScore = (oldScoreSum + newScore) / (self.occurences)

    def printWordStatistic(self) :
           print ("Word          : ", self.keyword)
           print ("Occurences    : ", self.occurences)
           print ("Average Score : ", self.occurences, "\n\n")
# "teaching" the code
wordDictionary = {}
fileInstance = open("movieReviews.txt",'r')
fileText = fileInstance.read()

# formatting and splitting 
reviewSplits = fileText.split("movieReviews")
for review in reviewSplits :
        review = review.strip()
        if review == "" :
            continue
        lineSplits = review.split("\n")
        score = int(lineSplits[0].strip())
        for i in range(1, len(lineSplits)) :
            wordSplits = re.split("\t| ", lineSplits[i])
            for word in wordSplits :
                if word == "" :
                    continue
                # If it is already present, then update the score and count
                # Otherwise just add the new entry to the dictionary
                if wordDictionary in(word) :
                    wordStatistic = wordDictionary.get(word)
                    wordStatistic.addNewScore(score)
                else :
                    wordStatistic = WordStatistic(word, score, 1)
                    wordDictionary[word] = wordStatistic
# print the stats of the words
def printAllWordStatistic(wordDictionary) :
    for wordStatistic in wordDictionary.values() :
        wordStatistic.printWordStatistic()
# rating the actual review
def calculateAverageOfReview(review) :
    review.replace("\t", " ")
    review.replace("\n", " ")
    wordSplits = review.split(" ")
    averageScore = 0.0
    totalCount = 0;
    for word in wordSplits :
        if wordDictionary in (word) :
            averageScore += wordDictionary.get(word).getAverageScore()
            totalCount = totalCount + 1
    if totalCount != 0 :
        return averageScore / totalCount
    return -1
# getting user input and append multi lines of case of multi line review
while (True) :
    print ("\nEnter a review : ");
    multiLines = []
    while True:
        line = input()
        if line:
            multiLines.append(line)
        else:
            break
    inputReview = '\n'.join(multiLines)
    averageScore = calculateAverageOfReview(inputReview)
    if averageScore != -1 :
        if averageScore >= 2.50 :
            print ("Positive Review");
        else :
            print ("Negative Review");
    else :
        print ("Unable to rate the review");
    if input("\nDo you want to continue ? (Y/N) : ") != "Y" :
        print ("Quitting the session.");
        exit()

Answer 1

这意味着int不知道如何处理非0-9的字符。如果您有一些任意字符串要从中提取数字，可以使用正则表达式，而不是：

score = int(lineSplits[0].strip())

像

这样的东西

score = int(re.search('[0-9]+', lineSplits[0]).group()))

将获取第一组数字。

具有基数10的int（）的无效文字究竟是什么意思？

1 个答案: