函数嵌套:
第一种嵌套方法
def func(): count = 123 def inner(): print(count) inner() func()
第二种嵌套方法
count = 123 def func_1(): print(count) def func_2(): func_1() func_2()
1. global
count = 0 def func1(): global count #把count变量变成全局变量,这样才可以修改,因为count在局部函数中没有定义 count = count + 1 print(count) func1() print(count)
2 . nonlocal
def func2(): count = 0 def func3(): nonlocal count #子函数对父函数的变量进行修改,不然的话就只能引用父函数变量不能修改 count = count + 1 print(count) func3() print(count) func2()