如何检查类中是否存在该函数

import java.lang.reflect.Method;

public class ReflectionExample {
    public static void main(String[] args) {
        Class<?> clazz = MyClass.class;
        Method[] methods = clazz.getDeclaredMethods();

        boolean exists = false;
        String functionName = "myFunction";

        for (Method method : methods) {
            if (method.getName().equals(functionName)) {
                exists = true;
                break;
            }
        }

        if (exists) {
            System.out.println("该函数存在于类中");
        } else {
            System.out.println("该函数不存在于类中");
        }
    }

    static class MyClass {
        public void myFunction() {
            // 函数实现
        }
    }
}

class MyClass:
    def my_function(self):
        pass

class_exists = hasattr(MyClass, 'my_function')

if class_exists:
    print("该函数存在于类中")
else:
    print("该函数不存在于类中")