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平仮名・片仮名の小文字を大文字にするワンライナー

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概要

translate_large_kana = lambda x: x.translate(dict([(ord(k), ord(k) + 1) for k in ('', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '')]))
translate_large_kana('シャツ')
# シヤツ

何コレ?

  • ord('ぁ')ord('あ') みたいな小文字と大文字は ord の差が 1 なので、 chr(ord('ぁ') + 1) == 'あ'になる
  • ↑の概念をもとに、小文字を大文字に変換する辞書を作成して、 str.translate する
  • という lambda 関数を作った
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