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はじめに

移植やってます。

re.sub (Python)

import re
s = '1A2B3C'
print(re.sub(r'[A-Z]', '', s))
print(re.sub(r'[A-Z]', '', s, count=1))

# 123
# 12B3C

正規表現で一致した文字列を置換します。
countオプションで置換する回数を指定できます。
https://docs.python.org/ja/3.7/library/re.html#re.sub

gsub (Ruby)

s = '1A2B3C'
puts s.gsub(/[A-Z]/, '')
puts s.sub(/[A-Z]/, '')

# 123
# 12B3C

Rubyの場合、すべて置換するgsub/gsub!と最初に一致する文字列を置換するsub/sub!があります。

メモ

  • Python の re.sub を学習した
  • 百里を行く者は九十里を半ばとす
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