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modular programming
Test Drive
So what happens if you fire up coffee_pos.py in IDLE and buy a $2 latte?
It looks like it’s working on the screen. What about in the transactions.txt file? Will
the latte still cost $2.20?
00001983489203918924782 LATTE
The actual price to
charge is here.
No, the latte was discounted by 10% to $1.98, which is exactly what you
want to record in the transactions file.
It’s time to demo your code to the boss.
you are here 4 203
