Table of Contents

Let’s build a Quiz Application in Python with these features:

Multiple-choice questions stored in a dictionary
Score tracking
Feedback for each question (correct or wrong)
Limit on retries per question (e.g., max 3 tries)
Final report showing total score
Exception handling for user input robustness

Step 1: Define the questions data structure
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We’ll use a list of dictionaries. Each dictionary is a question with choices and the correct answer.

questions = [
    {
        "question": "What is the capital of France?",
        "choices": ["A. Paris", "B. London", "C. Berlin", "D. Madrid"],
        "answer": "A"
    },
    {
        "question": "Which planet is known as the Red Planet?",
        "choices": ["A. Earth", "B. Mars", "C. Jupiter", "D. Saturn"],
        "answer": "B"
    },
    {
        "question": "What is the largest ocean on Earth?",
        "choices": ["A. Atlantic", "B. Indian", "C. Pacific", "D. Arctic"],
        "answer": "C"
    }
]

Step 2: Create the quiz function with score tracking and retries
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def run_quiz(questions, max_retries=3):
    score = 0
    
    for q in questions:
        print("\n" + q["question"])
        for choice in q["choices"]:
            print(choice)
        
        retries = 0
        while retries < max_retries:
            try:
                answer = input("Your answer (A/B/C/D): ").strip().upper()
                if answer not in ['A', 'B', 'C', 'D']:
                    raise ValueError("Please select A, B, C, or D")
                
                if answer == q["answer"]:
                    print("Correct! 🎉")
                    score += 1
                    break
                else:
                    retries += 1
                    if retries < max_retries:
                        print(f"Incorrect! Try again ({max_retries - retries} attempts left). ❌")
                    else:
                        print(f"Out of retries! The correct answer was {q['answer']}.")
            except ValueError as e:
                print(e)
        
    print("\n=== Quiz Complete ===")
    print(f"Your final score: {score}/{len(questions)} 🏆")

Step 3: Main program to run the quiz
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def main():
    print("Welcome to the Quiz Application! 📝")
    run_quiz(questions)

Optional: Save scores to a file and load previous scores
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This is a simple extension if you want:

import json
import os

def save_score(score, filename="scores.json"):
    scores = []
    if os.path.exists(filename):
        with open(filename, "r") as f:
            try:
                scores = json.load(f)
            except json.JSONDecodeError:
                scores = []
    scores.append(score)
    with open(filename, "w") as f:
        json.dump(scores, f)
    print("Score saved! 💾")

def show_past_scores(filename="scores.json"):
    if not os.path.exists(filename):
        print("No past scores found.")
        return
    with open(filename, "r") as f:
        try:
            scores = json.load(f)
            print("Past scores:", scores)
        except json.JSONDecodeError:
            print("No valid scores data.")

You could call save_score(score) after quiz completion to keep a record.

Practice Exercise with solution
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Add a feature to randomize question order each time the quiz starts.
Display percentage score along with raw score at the end.

Would you like me to combine the complete script for you with file save/load included? 😊

## 2. Quiz Application 📝
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**Description:** Create a quiz app with multiple-choice questions stored in a dictionary or JSON file. The app should track user scores, give feedback, limit retries, and show a final report.

**Concepts Covered:**

Dictionaries and lists for questions
Loops and conditionals for interaction
Functions for modularity
File handling to load/save scores (optional)
Exception handling for robust input processing