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入門Python3 正誤表P288 改行が余計に追加される

Posted at

[入門Python3 BillLubanovic著」を、読んでうまく動かなかったところのメモです。

### 不具合
P.288
with open('villains', 'rt') as fout:
csvout = csv.writer(fout)
csvout.writerows(villains)

を実行した際に、各行に改行が余計に追加されてしまう問題がある。

### 対策
open関数に newline引数を指定したら正しく(参考書通りに)動作しました。

with open('villains', 'rt', newline='') as fout:

https://docs.python.org/ja/3/library/csv.html#examples
このページの一番下に書かれてました。

Skype理工学勉強会では、同書の読書写経会をしています。
Skype上の無料オンライン会です。

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