你好，提取的关键词怎么按词性过滤呢

[ieliwb]

RT，谢谢

[letiantian]

class TextRank4Keyword(object):

    def __init__(self, stop_words_file = None, 
                 allow_speech_tags = util.allow_speech_tags, 
                 delimiters = util.sentence_delimiters):

这里 allow_speech_tags 是词性列表。

[ieliwb]

谢谢