sentiment-analysis.py

import argparse
from googleapiclient import discovery
from oauth2client.client import GoogleCredentials

def main(movie_review_filename):
  '''Run a sentiment analysis request on text within a passed filename.'''

  credentials = GoogleCredentials.get_application_default()
  service = discovery.build('language', 'v1', credentials=credentials)

  with open(movie_review_filename, 'r') as review_file:
    service_request = service.documents().analyzeSentiment(
      body={
        'document': {
          'type': 'PLAIN_TEXT',
          'content': review_file.read(),
        }
      }
    )
    response = service_request.execute()

  score = response['documentSentiment']['score']
  magnitude = response['documentSentiment']['magnitude']

  for i, sentence in enumerate(response['sentences']):
    sentence_sentiment = sentence['sentiment']['score']
    print('Sentence {} has a sentiment score of {}'.format(i, sentence_sentiment))

  print('Overall Sentiment: score of {} with magnitude of {}'.format(
    score, magnitude))
  return 0

if __name__ == '__main__':
  parser = argparse.ArgumentParser()
  parser.add_argument("movie_review_filename")
  args = parser.parse_args()
  if args is False:
	SystemExit	
  main(args.movie_review_filename)