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modular programming

The Starbuzz code

The attachment from Starbuzz was a file called starbuzz.py.
When you open it, you see this:

Lines that start with # Official Starbuzz Discount Module
# are comments; Python # Copyright(c) Starbuzz Corporation
will ignore them.
# All Rights Reserved.
# This function calculates a 5% discount on a price
This is the def discount(price):
discount function, return 0.95 * price
as provided by
Starbuzz.

This function returns a price
The first few lines begin with # characters; these are comments. that's 5% lower than the price it
Comments are just notes added by a programmer that are intended was given.
to be read by other programmers. Python will ignore them, because
comments are not code.
After the comments comes the Starbuzz discount() function. It’s
just like the discount function you wrote, except instead of returning a
10% discount, it returns a 5% discount.
Your code will have to use both discounts:

It will apply a 10% discount to everything.

And if somebody presents a Starbuzz Discount Card, it will also have to
apply the 5% Starbuzz discount.

You need to change the code so that it uses both of the discount()
functions. Can you see a problem? What is it?

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