在Python3.8中使用while循环不需要输出

Question

嘿，我一直在为字典编写代码，但我一直面临一些问题。我是python新手，所以无法理解它。 我使用while循环对其进行迭代，直到没有得到所需的选项，但是如果您输入所需的选项，它不会进入if、else条件，并返回“none”作为输出。但是如果我先输入错误的输出，然后输入正确的输出，它就可以正常工作

这是我的密码：

def dict(word):
    word = word.lower()
    if word in data:
        return data[word]
    elif len(get_close_matches(word, data.keys())) > 0:
        yn = input("Did you mean %s instead?Enter Y if yes or N if no >> " % get_close_matches(word,data.keys(), cutoff=0.8)[0])
        yn = yn.lower()
        while not yn in ("yes", "y", "no", "n"):
            yn = input("Please try Again: ")

            if yn == "y" or yn == "yes":
                return data[get_close_matches(word,data.keys(), cutoff=0.8)[0]]
            elif yn =="n" or yn == "no":
                return "Word not Found. Please Check if you have typed the right word.\n "
            else:
                return "We did not understand your query. Please try Again!  "
    else:
        return "Word not Found. Please Check if you have typed the right word.\n "

以下是使用正确输入时得到的输出：

Enter Word: rainn
Did you mean rain instead?Enter Y if yes or N if no >> Y
None

以下是我在第一次使用错误输入时得到的输出：

Enter Word: rainn
Did you mean rain instead?Enter Y if yes or N if no >> p
Please try Again: y
Precipitation in the form of liquid water drops with diameters greater than 0.5 millimetres.
To fall from the clouds in drops of water.

Answer 1

压痕问题。更正如下：

def dict(word):
    word = word.lower()
    if word in data:
        return data[word]
    elif len(get_close_matches(word, data.keys())) > 0:
        yn = input("Did you mean %s instead?Enter Y if yes or N if no >> " % get_close_matches(word,data.keys(), cutoff=0.8)[0])
        yn = yn.lower()
        while not yn in ("yes", "y", "no", "n"):
            yn = input("Please try Again: ")

        if yn == "y" or yn == "yes":
            return data[get_close_matches(word,data.keys(), cutoff=0.8)[0]]
        elif yn =="n" or yn == "no":
            return "Word not Found. Please Check if you have typed the right word.\n "
        else:
            return "We did not understand your query. Please try Again!  "
    else:
        return "Word not Found. Please Check if you have typed the right word.\n "