語法 :: nonlocal 陳述句

• 在區域函式中使用

def f1():
    x = 1

    def f2():
        x = 2

    print(x) # 1

def f1():
    x = 1

    def f2():
        nonlocal x
        x = 2

    print(x) # 2

def f1():
    x = 1

    def f2():
        nonlocal x = 2 # SyntaxError: invalid syntax
        x = 2

    print(x) # 2

x = 1

def f():
    nonlocal x
    x = 2

# SyntaxError: no binding for nonlocal 'x' found