嵌套函数和作用域

name = "Alex"
 
def change_name():
    name = "Alex2"
 
    def change_name2():
        name = "Alex3"
        print("第3层打印",name)
 
    change_name2() #调用内层函数
    print("第2层打印",name)
 
 
change_name()
print("最外层打印",name)

例一：
name=‘alex‘

def foo():
    name=‘lhf‘
    def bar():
        print(name)
    return bar

func=foo()
func()


例二：
name=‘alex‘

def foo():
    name=‘lhf‘
    def bar():
        name=‘wupeiqi‘
        def tt():
            print(name)
        return tt
    return bar

func=foo()
func()()