Project: A Quiz Engine

Why this matters

Time to put functions, lists, tuples and loops together. You will finish a small quiz engine: it asks questions from a list, checks the answers forgivingly, and gives a score. The structure (data, small functions, a short main program) is how real programs are organised.

The idea

The starter already has the data and the main program. Your job is to fill in three small functions, each doing one thing:

Function	Job
check_answer(given, correct)	True if the answers match, ignoring spaces and capitals
run_quiz(questions)	ask every question, print feedback, return the score
grade(score, total)	return a message for the score

Small functions are easier to test and to change. If you later want to read the questions from a file (a later module), only the data changes.

Try it

Add a fourth question to the QUESTIONS list and run the program. Does everything still work? Think about why it does.

Your turn

Complete the three functions. The main program at the bottom is already written: leave it alone.

run_quiz asks each question with input(question + " "). After each answer print either Correct! or Wrong! The answer was ANSWER (using the stored answer). It returns the number of correct answers.

grade returns Great job! for a perfect score, Good effort! for half or more, and Keep practising! otherwise.

For answers paris, 4 and green the whole program prints:

Correct!
Correct!
Wrong! The answer was blue
Score: 2/3
Good effort!

Recap

• Break a program into small functions that each do one job and return their result.
• Keep data (the questions) separate from the code that uses it.
• A short main program that calls the functions reads like a summary.

Common mistakes

• Printing the score inside run_quiz instead of returning it. The main program needs the number.
• Comparing without cleaning, so "Paris " or "paris" is wrongly marked wrong.
• Changing the main program to make a test pass instead of fixing the function.