text_features.py 文件源码

def __init__(self, require_unique_match, lemmatizer="word_net",
                 empty_question_features=False, stop_words=None):
        self.lemmatizer = lemmatizer
        self.stop_words = stop_words
        self.empty_question_features = empty_question_features
        if lemmatizer == "word_net":
            self._lemmatizer = WordNetLemmatizer()
        else:
            raise ValueError()
        self._cache = {}
        self.require_unique_match = require_unique_match