Time to combine conditionals and loops into real programs. You'll build two.

Part 1: FizzBuzz

FizzBuzz is the most famous beginner programming exercise there is — it shows up in real job interviews. The rules, for the numbers 1 to 15:

• Multiples of 3 print Fizz
• Multiples of 5 print Buzz
• Multiples of both print FizzBuzz
• Everything else prints the number itself

The tool you need is %, the remainder operator. n % 3 == 0 means "n divides evenly by 3."

for n in range(1, 16):
    if n % 3 == 0 and n % 5 == 0:
        print("FizzBuzz")
    elif n % 3 == 0:
        print("Fizz")
    elif n % 5 == 0:
        print("Buzz")
    else:
        print(n)

The order is the whole trick. The FizzBuzz check has to come first. If you tested n % 3 first, then 15 would match it and print Fizz — the combined case would never be reached. Remember from lesson 2.3: Python takes the first true branch and skips the rest.

Part 2: The guessing game

Now something interactive. The program holds a secret number and keeps asking until the player gets it, giving a "higher" or "lower" hint each time.

This pulls together while True, input(), int(), if/elif/else, break, and a counter.

secret = 7
guesses = 0

while True:
    guess = int(input("Guess a number (1-10): "))
    guesses += 1

    if guess < secret:
        print("Higher!")
    elif guess > secret:
        print("Lower!")
    else:
        print(f"Correct! It took you {guesses} guesses.")
        break

The loop is deliberately infinite — the break in the else branch is the only way out, and it only fires on a correct guess. guesses is a counter, exactly the pattern from lesson 2.8.

The secret is hardcoded to 7 for now. In Module 7 you'll meet the random module and can make the computer pick a real random number.

Take it further

If you want to push yourself:

• Give the player only 3 attempts, then reveal the answer.
• Print "Too far off" when the guess is more than 3 away from the secret.
• Extend FizzBuzz to 100, or add Bazz for multiples of 7.

Module 2 complete

You can now write programs that make decisions and repeat work — if/elif/else, while, for, range(), break, continue, and the accumulator and counter patterns. That is the control flow that every program is built from.

Next up: Module 3 — Data Structures, where you'll learn to store many values at once instead of one variable at a time.