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@b-nomura(Bun Nomura)

「特定の文字が”1つのみ”含まれる」の表現方法

Posted at

思考プロセス

カウント関数を用いて、対象の文字列に含まれる文字の数を取得し、1であれば「1つのみ」を表現できる。

s = "hello@world.com"
print(s.count("@") == 1)  # True
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