GitCommitBear.py 文件源码

def check_imperative(self, paragraph):
        """
        Check the given sentence/s for Imperatives.

        :param paragraph:
            The input paragraph to be tested.
        :return:
            A list of tuples having 2 elements (invalid word, parts of speech)
            or an empty list if no invalid words are found.
        """
        words = nltk.word_tokenize(nltk.sent_tokenize(paragraph)[0])
        # VBZ : Verb, 3rd person singular present, like 'adds', 'writes'
        #       etc
        # VBD : Verb, Past tense , like 'added', 'wrote' etc
        # VBG : Verb, Present participle, like 'adding', 'writing'
        word, tag = nltk.pos_tag(['I'] + words)[1:2][0]
        if(tag.startswith('VBZ') or
           tag.startswith('VBD') or
           tag.startswith('VBG') or
           word.endswith('ing')):  # Handle special case for VBG
            return (word, tag)
        else:
            return None