def fun1():
    x = 1
    try:
        print('执行try')
        x = x + 1
        # x = x / 0　　# 执行次语句时，finally执行时，x的值依然是4
        return print('执行try的return', x)
    except:
　　　　　
        print('异常')
        return x
    finally:
        x += 1
        x += 1
        print('finally执行:', x)