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CurriculumPython Lists, Indexing and Slicing for KidsThe Grand Inventory Check

Practice Challenge: Sorting a Python List by Hand

Lists, loops, and decisions — sorting a whole hoard, one item at a time.

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The Grand Inventory Check

You know indexing, slicing, append, remove, and shared references. Now put a loop and a decision on top.

for item in a_list: visits every item — same pattern you've already used with whileloops' patrol.

values = [50, 200, 10]
for v in values:
    print(v)

Output

50
200
10

Add an if/elif/else inside that loop, and you can react DIFFERENTLY to each item, all in one pass through the list.

Check your understanding

values = [50, 200, 10]. Using if/elif/else with 150 and 20 as cutoffs, how many lines print?

  • 3 — one label per value
  • 9 — every value checked against every rule
  • 1 — only the biggest value matters

Why: Three values, three passes, one label each — the loop and the conditional work together exactly like they did in the whileloops boss, just walking a list instead of counting with range().

What you'll practice

party = ["Ember", "Blaze", "Frost"]. Loop over the party and print a greeting for each name — using for name in party:, not indexing.

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More from this topic

The Grand Inventory Check is one lesson inside Python Lists, Indexing and Slicing for Kids — see the full lesson order and what the whole topic covers.

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