__init__.py 文件源码

def wordnet_lemmatize(word, pos='n'):
    global _nltk_wordnet_lemmatizer
    try:
        _nltk_wordnet_lemmatizer
    except NameError:
        _nltk_wordnet_lemmatizer = WordNetLemmatizer()
    return _nltk_wordnet_lemmatizer.lemmatize(word, penn2morphy(pos))