Choose How Many

Ask the player how many questions to answer before each round

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run_quiz now accepts a num argument, but the while loop still calls run_quiz() with no arguments — always running all ten questions. Asking the player before each round puts them in control.

You already know try/except from the answer-validation loop in ask_question. The same pattern works here: try to convert the input to an integer; if it fails, fall back to all questions.

Pressing Enter without typing anything produces an empty string. Calling int("") raises a ValueError — so you need to check for an empty string before converting, or handle it in the except block.

Instructions

Ask the player how many questions they want before each round.

In the while True: loop, before the run_quiz() call, add a try/except ValueError block — inside try, read input with input(f"How many questions? (1-{len(QUESTIONS)}, enter for all): ") and strip whitespace with .strip(); if the result is an empty string, set num = len(QUESTIONS); otherwise convert it with int() and assign to num — the try/except catches non-numeric input and falls back to all questions.
Replace run_quiz() with run_quiz(num=num) — this passes the player's choice to the function.
Add print() after the try/except block (before run_quiz) — this adds a blank line between the prompt and the quiz header.

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QUESTIONS = [
    ("What is the type of the value 3.14?", "int", "str", "float", "bool", 3),
    ("What keyword defines a function in Python?", "for", "def", "if", "class", 2),
    ("What does print() do?", "Stores a value", "Returns a number", "Displays output", "Reads input", 3),
    ("What type does input() always return?", "int", "float", "str", "bool", 3),
    ("Which keyword starts a for loop?", "loop", "repeat", "for", "each", 3),
    ("What does len() return?", "The first item", "The last item", "The number of items", "The Sum", 3),
    ("What is the result of 10 // 3?", "3.33", "3", "1", "0", 2),
    ("Which keyword exits a loop early?", "exit", "return", "stop", "break", 4),
    ("What does elif stand for?", "else if", "elif loop", "end loop if", "extra loop", 1),
    ("What does a function return with no return statement?", "0", "False", "None", "Error", 3),
]

def ask_question(text, o1, o2, o3, o4, correct):
    print(text)
    print()
    print(f"  1) {o1}")
    print(f"  2) {o2}")
    print(f"  3) {o3}")
    print(f"  4) {o4}")
    print()
    while True:
        answer_text = input("Your answer (1-4): ")
        try:
            answer = int(answer_text)
        except ValueError:
            print("Please enter 1, 2, 3, or 4.")
            continue
        if answer < 1 or answer > 4:
            print("Please enter 1, 2, 3, or 4.")
            continue
        break
    is_correct = answer == correct
    print()
    print(f"You answered: {answer}")
    if is_correct:
        print("Correct!")
    else:
        print(f"Wrong! The correct answer was option {correct}.")
    return is_correct

def show_results(score, total):
    print(f"Score: {score}/{total}")
    if score == total:
        print("Perfect score!")
    elif score >= 2:
        print("Great job!")
    elif score >= 1:
        print("Not bad!")
    else:
        print("Keep practicing!")

def run_quiz(questions=QUESTIONS, num=None):
    if num is None:
        num = len(questions)
    score = 0
    streak = 0
    questions_for_round = questions[:num]
    total = len(questions_for_round)
    print(f"=== Python Quiz ({total} questions) ===")
    print()
    for text, o1, o2, o3, o4, correct in questions_for_round:
        result = ask_question(text, o1, o2, o3, o4, correct)
        if result:
            score = score + 1
            streak = streak + 1
            if streak >= 3:
                print(f"  Hot streak! ({streak} in a row)")
        else:
            streak = 0
    show_results(score, total)

while True:
    # Step 1: ask how many questions (try/except, empty string check)
    # Step 3: print blank line
    # Step 2: replace run_quiz() with run_quiz(num=num)
    run_quiz()
    print()
    again = input("Play again? (y/n): ")
    if again != "y":
        break

print("Thanks for playing!")

Choose How Many

Instructions

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