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Solution: Countdown

Explore how to create a countdown program in Python using a for loop. This lesson helps you understand the use of range for counting backward and executing code after a loop, building foundational skills in automation and control flow.

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This program counts backward from 5 to 1 and then prints “Liftoff!” — just like a rocket countdown!

  • range(5, 0, -1) means:

    • Start at 5

    • Stop before 0

    • Count down by 1 each time (because of the -1 step).

  • The for loop prints each number — 5, 4, 3, 2, 1 — one at a time.

  • After the loop finishes, print("Liftoff!") runs once to display the final message.

Python
for i in range(5, 0, -1):
    print(i)
print("Liftoff!")