Challenge 3: Safe Lookup Report — Possible Solution
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inventory = {"apples": 10, "bananas": 5}
items_to_check = ["apples", "bananas", "cherries"]

for item in items_to_check:
    stock = inventory.get(item, 0)
    print(f"{item}: {stock} in stock")

Output:
apples: 10 in stock
bananas: 5 in stock
cherries: 0 in stock

WHY THIS WORKS AS AN ANSWER
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inventory.get(item, 0) is the exact defensive-lookup pattern the
chapter's warn-box called out — inventory[item] would raise a
KeyError the moment item is "cherries", since that key was never
added to inventory, crashing the whole loop partway through.

.get()'s second argument (0) supplies a sensible fallback specifically
for this domain: an item that isn't in the inventory dictionary at all
genuinely has zero units in stock, so 0 is both a safe default AND the
factually correct answer here, not just a crash-avoidance trick.

The loop then reuses the plain for-item-in-list iteration from Chapter
4 and the f-string formatting from Chapter 5 to print one report line
per item, regardless of whether that item exists in inventory or not.