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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()