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デコレータを使用してみる mshmura

Last updated at Posted at 2021-12-08

目的

  • デコレータの使用に慣れること

内容

関数実行前にメンバーかどうかを判断し、メッセージを切り替える。

login_decorator.py
member_list = ["高橋","田中","井上"]

def check_decorator(func):
    def check_member(name):
        print(f"==={name}さんの会員チェック開始===")
        if name in member_list:
            func(name)
        else:
            print(f"{name}さん、会員登録してください")
        print(f"==={name}さんの会員チェック終了===")
    return check_member
    
@check_decorator
def greeting(name):
    print(f"{name}さん、ようこそ")

# 関数実行
greeting("田中")
greeting("佐々木")

実行結果

===田中さんの会員チェック開始===
田中さん、ようこそ
===田中さんの会員チェック終了===  
===佐々木さんの会員チェック開始===
佐々木さん、会員登録してください  
===佐々木さんの会員チェック終了===

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