把下面代码保存为Python程序文件并运行,输出结果为?def before(func):
def wrapper(*args, **kwargs):
return func(*args, **kwargs) % 6
return wrapper
def after(func):
def wrapper(*args, **kwargs):
return func(*args, **kwargs) * 3
return wrapper
def func(n):
return n**2
print(after(before(func))(4))