conversation.py 文件源码

def word_count(message, word):
        """
        Computes the number of times a word appears in a message
        (case-insensitive).

        Args:
            message: A Message object.
            word: A string with no spaces.

        Returns:
            An int representing the number of times word (case-insensitive)
                appears in the text of message split by spaces.
        """
        if ' ' in word:
            raise ValueError('word cannot contain spaces')
        lowercase_tokens = [token.lower() for token in nltk.word_tokenize(message.text)]
        return lowercase_tokens.count(word.lower())