App de análisis de opiniones

Una aplicación básica de la API de Natural Language que realiza análisis de opiniones en textos.

Páginas de documentación que incluyen esta muestra de código

Para ver la muestra de código usada en contexto, consulta la siguiente documentación:

Instructivo de análisis de opiniones

Muestra de código

Python

"""Demonstrates how to make a simple call to the Natural Language API."""

import argparse

from google.cloud import language_v1

def print_result(annotations):
    score = annotations.document_sentiment.score
    magnitude = annotations.document_sentiment.magnitude

    for index, sentence in enumerate(annotations.sentences):
        sentence_sentiment = sentence.sentiment.score
        print(
            "Sentence {} has a sentiment score of {}".format(index, sentence_sentiment)
        )

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

def analyze(movie_review_filename):
    """Run a sentiment analysis request on text within a passed filename."""
    client = language_v1.LanguageServiceClient()

    with open(movie_review_filename, "r") as review_file:
        # Instantiates a plain text document.
        content = review_file.read()

    document = language_v1.Document(content=content, type_=language_v1.Document.Type.PLAIN_TEXT)
    annotations = client.analyze_sentiment(request={'document': document})

    # Print the results
    print_result(annotations)

if __name__ == "__main__":
    parser = argparse.ArgumentParser(
        description=__doc__, formatter_class=argparse.RawDescriptionHelpFormatter
    )
    parser.add_argument(
        "movie_review_filename",
        help="The filename of the movie review you'd like to analyze.",
    )
    args = parser.parse_args()

    analyze(args.movie_review_filename)