浅析Python中global和nonlocal关键字的妙用

x = 10

def increment_global():
    global x
    x += 1
    print("函数内部 x 的值:", x)

increment_global()
print("函数外部 x 的值:", x)

def outer_function():
    y = 20

    def inner_function():
        nonlocal y
        y += 1
        print("内部函数 y 的值:", y)

    inner_function()
    print("外部函数 y 的值:", y)

outer_function()

count = 0

def increment_counter():
    global count
    count += 1
    print("当前计数器值:", count)

increment_counter()
increment_counter()

def outer_function():
    result = 0

    def inner_function():
        nonlocal result
        result += 10
        print("内部函数计算结果:", result)

    inner_function()
    print("外部函数计算结果:", result)

outer_function()

def outer():
    x = 10

def inner():
    nonlocal x
    x += 5
    return x

  return inner

closure = outer()
print("闭包中的值:", closure())

global_var = 100

def modify_global():
    global global_var
    global_var += 50

modify_global()
print("修改后的全局变量值:", global_var)

def outer_function():
    outer_var = 10

    def inner_function():
        nonlocal outer_var
        outer_var += 5
        print("内部函数中的外部变量值:", outer_var)

    inner_function()
    print("外部函数中的外部变量值:", outer_var)

outer_function()

global_var = 100

def outer_function():
    nonlocal_var = 50

    def inner_function():
        global global_var
        nonlocal nonlocal_var

        global_var += 10
        nonlocal_var += 20

        print("全局变量值:", global_var)
        print("外部函数中的非局部变量值:", nonlocal_var)

    inner_function()
    print("全局变量值（外部函数中修改后）:", global_var)
    print("外部函数中的非局部变量值（外部函数中修改后）:", nonlocal_var)

outer_function()