Python 如何创建嵌套函数

我为猜鸟游戏定义了以下代码

print("Hello, welcome to the guess the bird game! You can guess 3 times. GOOD LUCK!")
bird = "robin"

guess_bird = input('First try to guess the bird, please fill in your answer:')

if guess_bird == bird:
    print("Congratulations, you have it right!")

else:
    guess_bird = input("Unfortunately.. Once again, don't give up!"
    if guess_bird == bird:
        print("Congratulations, you have it right!")
    else:
        guess_bird = input("Last try to guess the bird, you can do it!")
        if guess_bird == bird:
            print("Congratulations, you have it right!")

        else:
            print("Sorry, no more tries...")

然而，我得到一个错误。。。我怎样才能解决这个问题？错误是：

File "<ipython-input-6-787643515908>", line 12
    if guess_bird == bird:
                         ^
SyntaxError: invalid syntax

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您在guess\u bird=input行中缺少一个右括号，很遗憾。。再一次，不要放弃

猜一猜鸟=输入不幸。。再一次，不要放弃！那行应该有一个结束符。它试图在要输入的参数中包含if guess_bird==bird:。

缺少一个闭合括号

你在哪里写的

guess_bird = input("Unfortunately.. Once again, don't give up!"

它应该写为

guess_bird = input("Unfortunately.. Once again, don't give up!") #add the ')' at the end

我添加了一个repl.it以供参考

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您还没有关闭上一行的括号。标题提到了一个嵌套函数，但代码中似乎没有？