如何对Python对象的许多方法进行分组或集群

def method_group(group_name):
    def decorator(func):
        setattr(func, 'group', group_name)
        return func
    return decorator

class MethodCluster(type):
    def __init__(cls, name, bases, attrs):
        cls.methods = {}
        for name, value in attrs.items():
            if callable(value) and hasattr(value, 'group'):
                group_name = getattr(value, 'group')
                if group_name not in cls.methods:
                    cls.methods[group_name] = []
                cls.methods[group_name].append(name)

        super().__init__(name, bases, attrs)

class MyClass(metaclass=MethodCluster):
    @method_group('group1')
    def method1(self):
        pass

    @method_group('group1')
    def method2(self):
        pass

    @method_group('group2')
    def method3(self):
        pass

    @method_group('group2')
    def method4(self):
        pass