class CustomDictionary(dict):
    def __init__(self, dictionary):
        super().__init__(dictionary)

    @property
    def custom_property(self):
        return self

# 建立一個普通字典
my_dict = {'key1': 'value1', 'key2': 'value2'}
# 建立一個類的實例，使用字典來初始化物件
custom_dict = CustomDictionary(my_dict)

# 列印字典
print("字典:", my_dict)
# 列印類的實例
print("物件:", custom_dict)
# 列印類的屬性
print("屬性:", custom_dict.custom_property)
# 列印屬性的值
print("屬性的值:", custom_dict.custom_property)