lesson 3 of 3 · raise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposelesson 3 of 3 · raise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposelesson 3 of 3 · raise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposelesson 3 of 3 · raise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposelesson 3 of 3 · raise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposelesson 3 of 3 · raise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposelesson 3 of 3 · raise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposelesson 3 of 3 · raise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposelesson 3 of 3 · raise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposelesson 3 of 3 · raise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposelesson 3 of 3 · raise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purposeraise — failing loudly on purpose
Checkpoint
One last thing before we move on. pass this to mark the lesson done, or skip and keep moving. hop to the next when you're ready.
Last drill. Write a tiny order system:
- Define a function
place_order(inventory, item, qty)that:- Raises
KeyError(item)ifitemis not ininventory. - Raises
ValueError(f"only {inventory[item]} left of {item}")ifinventory[item] < qty. - Otherwise returns the string
f"shipped {qty} {item}".
- Raises
- Loop over three orders. For each, wrap the call in
try/except (KeyError, ValueError) as err: print(err).
Use this inventory and these orders:
inventory = {"book": 5, "pen": 0}
orders = [("book", 2), ("pen", 1), ("hat", 1)]
Expected output:
shipped 2 book
only 0 left of pen
'hat'