我的循环有问题，我无法描述

Question

我是编程新手（已经 1 周了），我制作了一个英语词库程序，它会询问您想要定义的单词并弹出该单词的定义，然后循环返回开始。当你被问到你想要定义哪个词时，你可以输入 \exit 并停止程序。但是，它在程序的后期阶段不起作用。例如：

Enter a Word or Type (\exit) to Exit: rainn 
Did You Mean 'rain'? (y) for YES and (n) for NO: n
The Word 'rainn' Does Not Exist! Please Try Again: \exit

这里会提示

Did You Mean 'exit'? (y) for YES and (n) for NO: n

它应该在哪里停止程序。

帮帮我，我绝望了，我尽我所能。

程序代码如下：

import json
from difflib import get_close_matches

data = json.load(open("data.json"))

while True:
keyword = input("Enter a Word or Type (\exit) to Exit: ")
    if keyword == "\exit":
        break
    elif keyword.lower() in data:
        output = data[keyword.lower()]
        if isinstance(output, list):
            for definition in output:
                print("\"%s\"" % definition)
        else:
            print("\"%s\"" % definition)
    elif keyword.title() in data:
        output = data[keyword.title()]
        if isinstance(output, list):
            for definition in output:
                print("\"%s\"" % definition)
        else:
            print("\"%s\"" % definition)
    elif keyword.upper() in data:
        output = data[keyword.upper()]
        if isinstance(output, list):
            for definition in output:
                print("\"%s\"" % definition)
        else:
            print("\"%s\"" % definition)
    elif len(get_close_matches(keyword.lower(), data.keys())) > 0:
        correction = input(
            "Did You Mean %s? (y) for YES and (n) for NO: " % (get_close_matches(keyword.lower(), data.keys())[0]).capitalize())
        while True:
            if correction.lower() == "y":
                output = data[get_close_matches(keyword.lower(), data.keys())[0]]
                if isinstance(output, list):
                    for definition in output:
                        print("\"%s\"" % definition)
                else:
                    print("\"%s\"" % definition)
                break
            elif correction.lower() == "n":
                # giving input "\exit" won't work here where it's supposed to
                keyword = input("The Word '%s' Does Not Exist! Please Try Again or Type (\exit) to Exit: " % keyword)
                break
            else:
                correction = input("Unrecognized Input! Please Try Again: ")
    else:
        # giving input "\exit" won't work here too
        keyword = input("The Word '%s' Does Not Exist! Please Try Again or Type (\exit) to Exit: " % keyword)

Answer 1

这是因为当您在内部 while 循环中键入 '\exit' 并设置关键字变量时，它会中断，然后您在外部循环的顶部重新开始并要求输入以再次设置关键字。所以它会覆盖'\exit'。为了解决这个问题，您可以添加一个标志退出来检查您是否应该再次要求输入。希望这可以帮助！ :)

import json
from difflib import get_close_matches

data = json.load(open("data.json"))

exit = False
while True:
    if exit != True:
        keyword = input("Enter a Word or Type (\exit) to Exit: ")
    if keyword == "\exit" or exit:
        break
    elif keyword.lower() in data:
        output = data[keyword.lower()]
        if isinstance(output, list):
            for definition in output:
                print("\"%s\"" % definition)
        else:
            print("\"%s\"" % definition)
        break
    elif keyword.title() in data:
        output = data[keyword.title()]
        if isinstance(output, list):
            for definition in output:
                print("\"%s\"" % definition)
        else:
            print("\"%s\"" % definition)
        break
    elif keyword.upper() in data:
        output = data[keyword.upper()]
        if isinstance(output, list):
            for definition in output:
                print("\"%s\"" % definition)
        else:
            print("\"%s\"" % definition)
        break
    elif len(get_close_matches(keyword, data.keys())) > 0:
        correction = input(
            "Did You Mean %s? (y) for YES and (n) for NO: " % (get_close_matches(keyword, data.keys())[0]))
        while True:
            if correction.lower() == "y":
                output = data[get_close_matches(keyword, data.keys())[0]]
                if isinstance(output, list):
                    for definition in output:
                        print("\"%s\"" % definition)
                else:
                    print("\"%s\"" % definition)
                break
            elif correction.lower() == "n":
                # giving input "\exit" won't work here where it's supposed to
                keyword = input("The Word '%s' Does Not Exist! Please Try Again: " % keyword)
                if keyword == "\exit":
                    exit = True
                break
            else:
                correction = input("Unrecognized Input! Please Try Again: ")
    else:
        # giving input "\exit" won't work here too
        keyword = input("The Word '%s' Does Not Exist! Please Try Again: " % keyword)
        if keyword == "\exit":
            exit = True

Answer 2

欢迎来到编程世界。这可能令人沮丧，不是吗？

在第 50 行，你有

keyword = input("The Word '%s' Does Not Exist! Please Try Again: " % keyword)
break

系统会在这里等待输入，但系统不会对keyword做任何事情。

我不确定你想让程序做什么。我怀疑您想将 input 更改为 print，然后重新开始，允许用户输入新单词或退出程序。

对您的下一个问题的温和建议：最好将您的代码直接放在问题中，而不是让我们在其他网站上查找它。不过不用担心！我希望你喜欢你的编程冒险。