Python Tkinter 测验项目答案校验功能实现问题

你只需要按以下步骤调整代码即可实现答案校验与结果输出功能：

核心修改点 #

• 在类初始化方法中新增两个实例变量，分别记录当前题号、当前题的正确答案
• 调整随机抽题逻辑，直接从题库中抽取包含题目和答案的完整条目，不需要单独维护题目列表、答案列表
• 完善提交按钮的事件处理逻辑，将用户选择的答案转换为布尔值后与标准答案比对，将结果写入滚动文本组件
• 绑定下一题按钮的点击事件，实现题目切换、单选状态重置的逻辑

完整修改后代码 #

import tkinter as tk 
from tkinter import ttk, Label, scrolledtext, IntVar, Radiobutton   
import random

class Python_Quiz:
    def __init__(self):
        self._win = tk.Tk() 
        self._win.resizable(False, False) 
        self._win.title("Python Quiz - Try Out This Quiz") 
        self._win.geometry("400x450")

        # 新增实例变量：记录当前题号、当前题正确答案
        self.current_q_num = 1
        self.current_correct_ans = None

        # Button
        actionFrame = ttk.Frame(self._win)
        actionFrame.pack()

        # Start Button
        self._start_btn = ttk.Button(actionFrame, text="Start")        
        self._start_btn.pack()                
        self._start_btn.bind('<Button-1>', self.start_btn_event) 

        self._myLabel_text = tk.StringVar()
        self._myLabel_text.set("Question will appear here")
        self._myLabel = Label(self._win, textvariable=self._myLabel_text)
        self._myLabel.pack()

        radioFrame = ttk.Frame(self._win)
        self._radValue = tk.IntVar()
        radioFrame.pack()
        self.i = IntVar()

        self._option_1_text = tk.StringVar()
        self._option_1_text.set("Option 1")
        self._option_1_rdbtn = Radiobutton(radioFrame, textvariable=self._option_1_text, variable=self.i, value=1)         

        self._option_2_text = tk.StringVar()
        self._option_2_text.set("Option 2")
        self._option_2_rdbtn = Radiobutton(radioFrame, textvariable=self._option_2_text, variable=self.i, value=2)          

        self._option_1_rdbtn.pack() 
        self._option_2_rdbtn.pack()       

        actionFrame_2 = ttk.Frame(self._win)
        actionFrame_2.pack()
 
        # Submit Button
        self._submit_btn = ttk.Button(actionFrame_2, text="Submit") 
        self._submit_btn.config(state = tk.DISABLED)      
        self._submit_btn.grid(column=0, row=0)

        # Next Button       
        self._next_btn = ttk.Button(actionFrame_2, text="Next")   
        self._next_btn.config(state = tk.DISABLED)
        self._next_btn.grid(column=1, row=0)
        # 绑定下一题按钮事件
        self._next_btn.bind('<Button-1>', self.next_q_event)

        # Scrolled Text
        outputFrame = ttk.Frame(self._win)
        outputFrame.pack()
        scrol_w  = 50
        scrol_h  =  5
        self._scrol_stxt = scrolledtext.ScrolledText(outputFrame, 
        width=scrol_w, height=scrol_h, font=("Helvetica", 15) ,  wrap=tk.WORD)
        self._scrol_stxt.config(state = tk.DISABLED)
        self._scrol_stxt.pack()

        self._win.mainloop()


    def start_btn_event(self, event):
        self._scrol_stxt.config(state = tk.NORMAL)
        self._scrol_stxt.insert(tk.INSERT,"选择答案后点击提交\n")
        self._scrol_stxt.config(state = tk.DISABLED)

        self._submit_btn.config(state = tk.NORMAL)
        self._submit_btn.bind('<Button-1>', self.submit_event_handler)
        # 直接从题库随机抽完整条目，存储题目和正确答案
        current_q = random.choice(questionBank)
        self.current_correct_ans = current_q[1]
        self._myLabel_text.set(f"Q{self.current_q_num}. {current_q[0]}")

        self._option_1_text.set("True")
        self._option_2_text.set("False")

        self._start_btn.config(state = tk.DISABLED)

        self._option_1_rdbtn.bind('<Button-1>', self.selection_event)
        self._option_2_rdbtn.bind('<Button-1>', self.selection_event)


    def submit_event_handler(self, event):
        if (self.i.get() ==0):
            self._scrol_stxt.config(state = tk.NORMAL)
            self._scrol_stxt.insert(tk.INSERT,f"请选择第{self.current_q_num}题的答案\n")
            self._scrol_stxt.config(state = tk.DISABLED)
            self._next_btn.config(state = tk.DISABLED)
        else:
            # 转换用户选择为布尔值：1对应True，2对应False
            user_ans = True if self.i.get() == 1 else False
            # 比对答案
            self._scrol_stxt.config(state = tk.NORMAL)
            if user_ans == self.current_correct_ans:
                self._scrol_stxt.insert(tk.INSERT,f"第{self.current_q_num}题回答正确\n")
            else:
                self._scrol_stxt.insert(tk.INSERT,f"第{self.current_q_num}题回答错误\n")
            self._scrol_stxt.config(state = tk.DISABLED)
            self._next_btn.config(state = tk.NORMAL)
            # 提交后禁用提交按钮，避免重复提交
            self._submit_btn.config(state = tk.DISABLED)

    def next_q_event(self, event):
        # 题号+1
        self.current_q_num += 1
        # 重置单选选择
        self.i.set(0)
        # 抽下一题
        current_q = random.choice(questionBank)
        self.current_correct_ans = current_q[1]
        self._myLabel_text.set(f"Q{self.current_q_num}. {current_q[0]}")
        # 恢复提交按钮，禁用下一题按钮
        self._submit_btn.config(state = tk.NORMAL)
        self._next_btn.config(state = tk.DISABLED)


    def selection_event(self, event):
        selection = "你选择了选项 " + str(self.i.get())
        print(selection)

questionBank = [ 
    ['变量名不能以数字开头', True],
    ["x='1'+1是合法语句", False],
    ['=和==可以互换使用', False],
    ['逻辑运算符and优先级高于or', True],
    ['字符串类型是不可变类型', True],
    ['x,y = y, x可以交换x和y的值', True],
    ['2=x是合法语句', False],
    ['变量名最长可以为50个字符', True]
]

def main():
    Python_Quiz()

main()

效果说明 #

修改后点击提交按钮会自动比对答案，在滚动文本区输出对应正误提示，点击下一题按钮会自动加载新的随机题目，支持连续答题。

内容的提问来源于stack exchange，提问作者Born2Student