関連ワード:  python check if string has unique characters    python check if string has special characters    python check if string contains special characters    python check if string has no special characters    python check if string is special character    python check if string has characters    python regex check if string contains special characters    python check if string contains only special characters    python check if string starts with special characters    python check if string contains characters  
結果 : python check if string has unique characters