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キーワード抽出をpythonでする。(yahooさんの力を借りて)

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#1 動機
yahooさんのapiを使ってのキーワード抽出をしたいと思ったがサンプルコードがPHPしかなかった。
(https://developer.yahoo.co.jp/sample/jlp/sample3.html)
pythonでしたいよ〜
#2 できること
文章を入れると、キーワード単語とその重要度が出力される。

#3 サンプルリクエストURL

https://jlp.yahooapis.jp/KeyphraseService/V1/extractappid="yahoocliantID"&sentence=<対象のテキスト>
yahooのcliant ID取得:(https://developer.yahoo.co.jp/yconnect/v2/registration.html)

#4 コード

keyword.py
import urllib.request
import sys
import xml.etree.ElementTree as ET
#sentence=解析したい文章
def key(sentence):
    url="https://jlp.yahooapis.jp/KeyphraseService/V1/extract?appid=<yahooのcliant ID>&sentence="+urllib.parse.quote(sentence)
    req = urllib.request.Request(url)
    with urllib.request.urlopen(req) as res:
        body = res.read()
        root = ET.fromstring(body)
    output=[]
    for child in root:
        sen=child[0].text+":"+child[1].text
        output.append(sen)
    return output

[参照]
・URLに日本語を含む時の対処(https://note.nkmk.me/python-urllib-parse-quote-unquote/)
・xmlを取得(https://qiita.com/Takaki_/items/4ba7f5e327296d403e65)

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