无法在 tkinter 中显示消息框

Question

我正在做一个问答游戏，在您点击提交每个问题后，如果答案正确，您将获得一分，然后您点击下一步，然后进入下一个问题。 但是，当您单击最后一个问题的下一步时，代码应该会显示一条消息，上面写着“感谢参与！” “你的分数是：”{你的分数}，但这并没有发生。

import random
import tkinter
from tkinter import *
from tkinter import messagebox
root = Tk()

score = IntVar()

Score = Label(root,text = "SCORE:")
Score.grid(row = 0, column = 0)
Scorenum = Label(root,textvariable = score)
Scorenum.grid(row = 0, column = 1)
questionslist = ["Who was the first president of the U.S.?","Which person had the highest IQ?","Who was the first person on the moon?"]
class question():
    def __init__(self, question, answer, options, answer_index):
        self.frame = Frame(root)
        self.question = Label(self.frame,text = question)
        self.answer = answer 
        self.tracker = IntVar()
        self.option_list = []
        s = 0
        for loop1 in options:
            options = Radiobutton(self.frame,text = loop1,variable = self.tracker,value = s)
            s = s + 1
            self.option_list.append(options)
        self.answer_index = answer_index
    def show_question(self):
        x = 2
        self.question.grid(row = 0, column = 0)
        self.frame.grid(row = 1, column = 0)
        for loop2 in self.option_list:
            loop2.grid(row = x, column = 0,sticky = W)
            x = x + 1
    def hide_question(self):
        self.frame.grid_forget()
def Next():
    global y
    question_list[y].hide_question()
    y = y + 1
    if y > 5:
        messagebox.showinfo("Thanks For Playing!", "Your Score Was:", score)
    question_list[y].show_question()
Next = Button(root,text = "Next",fg = "blue",command = Next)
Next.grid(row = 2, column = 1,sticky = W)

def Submit():
    global y
    if question_list[y].tracker.get() == question_list[y].answer_index:
        score.set(score.get() + 1)
        messagebox.showinfo("WOW!", "Thats Correct!")
        
Submit = Button(root,text = "Submit",fg = "red", command = Submit)
Submit.grid(row = 2, column = 0,sticky = W)
    

    
question1 = question("Who was the first president of the U.S.?", "George Washington", ["Bill Clinton", "George Washington", "Abraham Lincoln", "Joe Biden"], 1)
question2 = question("Who Made The Theory Of Relativity", "Shravan", ["Steven Hawking", "Albert Einstien", "Shravan", "Iisac Newton"], 2)
question3 = question("Who made the law of attraction", "Iisac Newton", ["Albert Einstien", "Iisac Newton", "Nicola Tesla", "Thomas Eddison"], 1)
question4 = question("Why was 6 afraid of 7", "Because 7 8 9", ["It wasn't", "This is a dumb question", "Because 7 8 9", "becaause 7 is bigger than 6"], 2)
question4 = question("Why was 6 afraid of 7", "Because 7 8 9", ["It wasn't", "This is a dumb question", "Because 7 8 9", "becaause 7 is bigger than 6"], 2)
question5 = question("Did you enjoy this test?", "Yes", ["Yes","No"],0)
question_list = [question1,question2,question3,question4,question5]
y = 0
question_list[y].show_question()

我将不胜感激一个固定的代码和解释 - 在此先感谢！

Answer 1

所以你得到这个错误的原因是因为没有条件来检查是否应该显示下一个问题。 列表中有 5 个元素，但是当您评估 y 时，它将从 0-4 而不是 1-5。 所以我添加了语句来检查它是否应该在列表中继续。 但是，我在评论中试图向您指出的是，您不能将 3 个参数传递给您的messagebox ，因此即使您的列表索引超出范围错误不存在，您的messagebox仍然会给您一个错误。 所以我也添加了更改。 您必须先检查 y 的值，然后再将其传递给您的messagebox ，然后“感谢您玩！” 并且“您的分数是：”必须使用相同的引号，以防止出现您尚未看到的messagebox错误。 我把print(y)扔进去了，这样你就可以看到值了。 我还添加了root.mainloop()所以它可以在 python IDLE 之外工作我希望这会有所帮助。

import random
import tkinter
from tkinter import *
from tkinter import messagebox
root = Tk()

score = IntVar()

Score = Label(root,text = "SCORE:")
Score.grid(row = 0, column = 0)
Scorenum = Label(root,textvariable = score)
Scorenum.grid(row = 0, column = 1)
#questionslist = ["Who was the first president of the U.S.?","Which person had the highest IQ?","Who was the first person on the moon?"]
class question():
    def __init__(self, question, answer, options, answer_index):
        self.frame = Frame(root)
        self.question = Label(self.frame,text = question)
        self.answer = answer 
        self.tracker = IntVar()
        self.option_list = []
        s = 0
        for loop1 in options:
            options = Radiobutton(self.frame,text = loop1,variable = self.tracker,value = s)
            s = s + 1
            self.option_list.append(options)
        self.answer_index = answer_index
    def show_question(self):
        x = 2
        self.question.grid(row = 0, column = 0)
        self.frame.grid(row = 1, column = 0)
        for loop2 in self.option_list:
            loop2.grid(row = x, column = 0,sticky = W)
            x = x + 1
    def hide_question(self):
        self.frame.grid_forget()
def Next():
    global y
    if y < 4:
        print(y)
        question_list[y].hide_question()
        y = y + 1
        question_list[y].show_question()
    elif y >= 4:
        final_score = score.get()
        messagebox.showinfo("Thanks For Playing! Your Score Was:", final_score)
    else:
        pass

Next = Button(root,text = "Next",fg = "blue",command = Next)
Next.grid(row = 2, column = 1,sticky = W)

def Submit():
    global y
    if question_list[y].tracker.get() == question_list[y].answer_index:
        score.set(score.get() + 1)
        messagebox.showinfo("WOW!", "Thats Correct!")
        
Submit = Button(root,text = "Submit",fg = "red", command = Submit)
Submit.grid(row = 2, column = 0,sticky = W)
    

    
question1 = question("Who was the first president of the U.S.?", "George Washington", ["Bill Clinton", "George Washington", "Abraham Lincoln", "Joe Biden"], 1)
question2 = question("Who Made The Theory Of Relativity", "Shravan", ["Steven Hawking", "Albert Einstien", "Shravan", "Iisac Newton"], 2)
question3 = question("Who made the law of attraction", "Iisac Newton", ["Albert Einstien", "Iisac Newton", "Nicola Tesla", "Thomas Eddison"], 1)
#question4 = question("Why was 6 afraid of 7", "Because 7 8 9", ["It wasn't", "This is a dumb question", "Because 7 8 9", "becaause 7 is bigger than 6"], 2)
question4 = question("Why was 6 afraid of 7", "Because 7 8 9", ["It wasn't", "This is a dumb question", "Because 7 8 9", "becaause 7 is bigger than 6"], 2)
question5 = question("Did you enjoy this test?", "Yes", ["Yes","No"],0)
question_list = [question1,question2,question3,question4,question5]
y = 0
question_list[y].show_question()


root.mainloop()