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price break

The health club has a new requirement

The health club boss has a grand plan to get more customers into the
health club.

Ooh, I think we need to discount the
prices in the coffee bar for the next month.
There‛s nothing like relaxing with a latte after
a tough workout, especially if the price is right.
Our customers like to treat themselves, so I
want to make this easy for them.

The boss has a great new idea.
The boss wants to cut 10% off all the prices in the
coffee bar. If it’s successful, he may want to do the
same thing in other places, such as the gym.
Instead of just amending the code in the
coffee_pos.py file, you need to create a new
module called promotion.py that will calculate
a discounted price.

200 Chapter 6