# x=1
# def func():
# x=2
#
# func()
# print(x)
# x=[]
# def func():
# x.append(1)
# x.append(2)
# x.append(3)
#
# func()
# print(x)
# global: 在局部声明变量是全局变量
# x=1
# def func():
# global x
# x=2
#
# func()
# print(x)
# nonlocal:在局部声明变量是外层函数的变量
x=333
def f1():
x=222
def f2():
x=111
def f3():
nonlocal x
x=0
f3()
print('f2内部的x: ',x)
f2()
print('这是f1内部的x: ',x)
f1()
print(x)