IndexError：列表索引超出范围，第42行，in main（）第14行，在main sent_file = open（sys.argv [1]）

Question

import sys
import json

# subroutine for calculating setiment scores for each tweets
def compute_score(text,scores):
    total = 0.0
    words = text.split()
    for word in words:
        if word in scores.keys():
            total = total + scores[word]
    return total

def main():
    sent_file = open(sys.argv[1]) # first argument of the function call is the sentiment file
    tweet_file = open(sys.argv[2]) # second argument of the function call is the tweets file

    # creating a dictionary for sentiment-word mapping
    scores = {} # initialize an empty dictionary to store sentiment scores for words
    for line in sent_file:
        term, score  = line.split("\t")  # The file is tab-delimited. "\t" means "tab character"
        scores[term] = int(score)  # Convert the score to an integer.

    # creating a dictionary for tweet-sentiment_score mapping
    tweets_scores = {} # initialize an empty dictionary
    index = 0
    for line in tweet_file:
        index = index + 1
        tweet = json.loads(line)
        text = tweet.get("text")
        # calculating setiment score
        if text:
            text = text.encode("utf-8")
            tweets_scores[index] = compute_score(text,scores)
        else: tweets_scores[index] = 0.0

    # print out results
    for i in tweets_scores:
        print(str(tweets_scores[i]))


if __name__ == '__main__':
    main()

Answer 1

您必须将文件名指定为命令行参数。 sys.argv是传递给Python脚本的命令行参数列表。

python test.py sen.txt twt.txt

Answer 2

你应该在command line中运行这个程序并给出这2个参数。像这样，在当前的dir运行终端：

python filename.py param1 param2

qazxsw poi是你的程序文件名，qazxsw poi是第一个参数，filename.py是第二个参数。