名詞と動詞のみ抽出するpythonコード

※mecab-python3-0.996.2で動作確認済み。
(mecab-python3の0.996ではnode.surfaceのバグがあって思わぬ挙動になります。)

get_meishi_or_doushi.py

import MeCab
mecab = MeCab.Tagger ('-d /usr/local/lib/mecab/dic/mecab-ipadic-neologd')

def get_meishi_and_doushi(document, stopwords):
    meishi = []
    mecab.parse("")
    node = mecab.parseToNode(document).next
    stopwords = stopwords
    while node:
        nodeFeature = node.feature.split(",")
        if nodeFeature[0] == "名詞" or nodeFeature[0] == "動詞":
            node_surface = node.surface 
            flag = False
            for stop in stop_words:
                if stop == node_surface:
                    flag = True
            if flag != True:
                meishi.append(node_surface)
        node = node.next
    return meishi

stop_words = ["で", "？", "も", "は", "か", "た", "て", "の", "し", "だ", "よ","０","ん","な","！","…","ー","に","お","ぜ","ここ","こと","は","ーーー"]

do.py

# textは任意の一次元配列
get_meishi_and_doushi(text, stop_words)