如何创建一个不能有实例的类？

class NoInstanceClass:
    def __init__(self):
        raise NotImplementedError("This class cannot be instantiated.")

    @staticmethod
    def static_method():
        print("This is a static method.")

    @staticmethod
    def static_property():
        return "This is a static property."

# 无法实例化类
# instance = NoInstanceClass()  # 抛出异常

# 可以直接调用静态方法和静态属性
NoInstanceClass.static_method()
print(NoInstanceClass.static_property())