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今日のpython error: UnicodeEncodeError: 'utf-8' codec can't encode characters

Last updated at Posted at 2019-12-31

昨日(20191230)の記事

今日のpython error: ModuleNotFoundError: No module named 'bs4'
https://qiita.com/kaizen_nagoya/items/f0056e5fc735b3ad5783

で、最後に出た

docker/ubuntu
# python3 wib.py
Traceback (most recent call last):
  File "wib.py", line 15, in <module>
    url = "https://ja.wikipedia.org/wiki/" + urllib.parse.quote(args[1])
IndexError: list index out of range

これは、実行時に引数を与えなかったからだった。
夜遅くの作業で、記事をあげて修了した。

朝、起きて、「IndexError: list index out of range」検索
IndexError: list index out of rangeのエラーが修正できません(初心者です)
https://teratail.com/questions/166749

元記事と
プログラムちょい替え(2)Python3: URLをコマンドライン引数で(wikipedia)
https://qiita.com/kaizen_nagoya/items/fc095b0c580a35001ea7

そのさらに元記事
wikipediaからのページからリンク一覧を取得する方法
https://qiita.com/tadaken3/items/e09ba2ede988bbacb303

を眺めるとargs[]は、コマンドラインの引数で、実行時に引数を与えていることがわかる。

昨日の夜はpythonの記述方法で頭がいっぱいで、実行時のコマンドにまで思いが至ってなかった。

docker/ubuntu
# python3 wic.py  統計
Traceback (most recent call last):
  File "wic.py", line 15, in <module>
    url = "https://ja.wikipedia.org/" + urllib.parse.quote(args[1])
  File "/usr/lib/python3.6/urllib/parse.py", line 819, in quote
    string = string.encode(encoding, errors)
UnicodeEncodeError: 'utf-8' codec can't encode characters in position 0-5: surrogates not allowed

日本語ではなく英語で実行してみる。

docker/ubuntu
# python3 wic.py hazop
Traceback (most recent call last):
  File "wic.py", line 17, in <module>
    html = urlopen(url)
  File "/usr/lib/python3.6/urllib/request.py", line 223, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/lib/python3.6/urllib/request.py", line 532, in open
    response = meth(req, response)
  File "/usr/lib/python3.6/urllib/request.py", line 642, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib/python3.6/urllib/request.py", line 570, in error
    return self._call_chain(*args)
  File "/usr/lib/python3.6/urllib/request.py", line 504, in _call_chain
    result = func(*args)
  File "/usr/lib/python3.6/urllib/request.py", line 650, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 404: Not Found

最後までおよみいただきありがとうございました。

いいね 💚、フォローをお願いします。

Thank you very much for reading to the last sentence.

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