How to write a tax function in python?

Question

Write a function that takes the price of the item as an argument and return the price calculated with a tax value of .07. The goal here is to convert the tax calculation into a reusable function.

Answer 1

If you want to just take the price of an item and add .07 tax, I would do the following:

def withTax(price):

return price * 1.07

# note that it is 1.07 because it includes the price of the item itself

However, if you want to do something reusable, I suggest something like this:

def withTax(price, tax = 0.07):

return price * (1 + tax)