PythonQuiz.py

import tkinter as tk  # Import tkinter library for GUI and give it ***alias tk
from tkinter import messagebox  # Import messagebox for popup

# This class holds/contains a single Exam question
class Question:
    def __init__(self, prompt, options, answer):
        self.prompt = prompt  # The text of the question
        self.options = options  # list of possible answer options
        self.answer = answer  # The correct answer string

# This class manages the exam: questions, score, and current question
class Exam:
    def __init__(self, questions):
        self.original_questions = questions[:]  # Make a copy of the original questions list
        self.reset_exam()  # *Initialize* the exam state

    def reset_exam(self):
        self.questions = self.original_questions[:]  # Reset questions list from original
        self.question_index = 0  # Start at the first question
        self.score = 0  # Start with a score of 0

    def get_current_question(self):
        return self.questions[self.question_index]  # Return the current question obj

    def check_answer(self, selected):
        current = self.get_current_question()  # Get the current questiom
        if current.answer == selected:  # Check if selected answer is correct
            self.score += 1  # Add a point if the answer is correct
        self.question_index += 1  # Move to the next question
        return self.question_index < len(self.questions)  # Return True if more questions are left

# GUI class to handle user interface with/using tkinter GUI
class ExamApp:
    def __init__(self, root, exam):
        self.root = root  # The main tkinter window
        self.exam = exam  # The Exam object containing Exam
        self.selected_option = tk.StringVar()  # A variable to hold the selected answer

        self.root.title("Final Exam")  # Set the window title

        # Create the question label
        self.question_label = tk.Label(root, text="", wraplength=400, font=("Arial", 14))  # Label for question text (appearance)
        self.question_label.pack(pady=20)  # Add label to window with vertical padding (for appearance and usability)

        self.options = []  # List to store radio buttons for answer options ***Radio buttons allow you to only select one option***
        for i in range(4):  # Loop to create 4 radio buttons (4 questions)
            rb = tk.Radiobutton(root, text="", variable=self.selected_option, value="", font=("Arial", 12))  # Create a radio button
            rb.pack(anchor="w", padx=20, pady=5)  # Add button to the window, left-aligned
            self.options.append(rb)  # Add the radio button to the list

        # Create the Submit button
        self.submit_button = tk.Button(root, text="Submit", command=self.submit_answer)  # a Button to submit a selected answer
        self.submit_button.pack(pady=10)  # Add button with padding (visual)

        # Create the Restart button
        self.restart_button = tk.Button(root, text="Restart Exam", command=self.restart_exam)  # Button to restart exam if you need to rescore :)
        self.restart_button.pack(pady=10)  # Add button with padding
        self.restart_button.config(state=tk.DISABLED)  # Disable restart button at the start

        self.load_question()  # Load and display the first question

    def load_question(self):
        q = self.exam.get_current_question()  # Get the current question
        self.selected_option.set(None)  # Clear any selected radio button
        self.question_label.config(text=q.prompt)  # Set question label text

        for i, option in enumerate(q.options):  # Loop through the 4 options
            self.options[i].config(text=option, value=option)  # Set the text and value of each radio button

    def submit_answer(self):
        selected = self.selected_option.get()  # Get the selected answer
        if not selected:  # If no option was selected
            messagebox.showwarning("No answer", "Please select an option.")  # Show warning popup
            return  # Exit the function early

        if self.exam.check_answer(selected):  # Check if the answer is correct and move to next question
            self.load_question()  # Load the next question
        else:
            # If no more questions left
            messagebox.showinfo("Exam Completed", f"You scored {self.exam.score}/{len(self.exam.questions)}")  # Show final score popup
            self.submit_button.config(state=tk.DISABLED)  # Disable Submit button
            self.restart_button.config(state=tk.NORMAL)  # Enable Restart button

    def restart_exam(self):
        self.exam.reset_exam()  # Reset exam data (score and questions)
        self.submit_button.config(state=tk.NORMAL)  # Enable Submit button
        self.restart_button.config(state=tk.DISABLED)  # Disable Restart button again
        self.load_question()  # Load the first question again

# --- The actual questions ---
question_list = [
    Question("Jimmy's father has three sons- Paul I and Paul II. Can you guess the name of the third son?  ", ["Paul III", "Jerin", "Jimmy", "None"], "Jimmy"),  # Create question 1
    Question("You're 4th place right now in a race. What place will you be in when you pass the person in 3rd place? ", ["1st", "2nd", "3rd", "Saturn"], "None of the ABove"),  # Question 2
    Question("How many months have 28 days? ", ["2", "1", "Depends on if the year is Leap", "All of Them"], "All of them"),  # Question 3
    Question("If you have a bowl with six apples and you take away four, how many apples do you have? ", ["2 Apples", "6 Apples", "4 Apples", "None"], "4 Apples"),  # Question 4
]

# Start the app
exam = Exam(question_list)  # Create Exam object with the question list
root = tk.Tk()  # Create the main tkinter window
app = ExamApp(root, exam)  # Create the ExamApp (GUI) with the window and exam logic
root.mainloop()  # Start the GUI event loop (keeps window open)