有没有在函数中使用可变代码的方法？

function dynamicFunction(name) {
    let code = `console.log('Hello, ${name}!');`;
    eval(code); // 注意：eval 的使用需要谨慎，因为它会执行传入的字符串作为代码
}

dynamicFunction('World'); // 输出: Hello, World!

class DynamicClass(type):
    def __new__(cls, name, bases, dct):
        dct['dynamic_method'] = lambda self: print("Dynamic method called")
        return super().__new__(cls, name, bases, dct)

class MyClass(metaclass=DynamicClass):
    pass

obj = MyClass()
obj.dynamic_method()  # 输出: Dynamic method called

import com.squareup.javapoet.JavaFile;
import com.squareup.javapoet.MethodSpec;
import com.squareup.javapoet.TypeSpec;

import javax.lang.model.element.Modifier;
import java.io.IOException;

public class CodeGenerator {
    public static void main(String[] args) throws IOException {
        MethodSpec main = MethodSpec.methodBuilder("main")
                .addModifiers(Modifier.PUBLIC, Modifier.STATIC)
                .returns(void.class)
                .addParameter(String[].class, "args")
                .addStatement("$T.out.println($S)", System.class, "Hello, World!")
                .build();

        TypeSpec helloWorld = TypeSpec.classBuilder("HelloWorld")
                .addModifiers(Modifier.PUBLIC, Modifier.FINAL)
                .addMethod(main)
                .build();

        JavaFile javaFile = JavaFile.builder("com.example.helloworld", helloWorld).build();
        javaFile.writeTo(System.out);
    }
}

def dynamic_function():
    return "Hello, World!"

code = compile(dynamic_function.__code__, "<string>", "exec")
exec(code)  # 输出: Hello, World!