Counting with range

The range() function is incredibly flexible. You can tell it where to start and where to stop. Remember, Python stops just before the stop number.

Worked example

How it reads

range(1, 4) generates numbers starting at 1 and stopping before 4 (1, 2, 3)
print(i) runs once for each of those numbers

Cloud tip: If you call range(stop), it starts at 0. If you call range(start, stop), it starts at start.

main.py

PYTHON

real Python, runs in your browser

Console

Run your code to see its output here.

YOUR TURN

Change the range so the loop counts down from 10 to 0 in steps of 2: 10, 8, 6, 4, 2, 0.

Press Run to check your work.

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