Better loops: enumerate, zip and friends
Loop like a Python programmer: enumerate for positions, zip for lists side by side, reversed, and why you never change a list while looping over it.
- The skill
- Loop with enumerate, zip and reversed, and never change a list while looping over it.
- You make
- Race result boards and a score cleanup that does not skip items.
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Builds on 25 Checkpoint: errors, files and JSON. Free to try: Python Foundations and the playground.
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exercise_1.py
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5 exercises in this lesson, checked as you type. Premium opens every lesson after Foundations, in all four courses.
Python 3.13