Shopping calculator

We want to format a shopping list for a party with the following products: beer, wine and chips. You have to ask the user for the prices of the 3 products (we assume that they are always \(< 10\) euros), and the quantities they want to buy (we assume that they are always \(<100\) units). The program must return the purchase itemized as follows:

>>> %Run 
    Beer price? 9.99
    Wine price? 1.05
    Chips price? 4
    How much beer? 99
    How much wine? 23
    How many bags of chips? 1
    --------------------------
    Total purchase
    --------------------------
    Beer           99   989.01
    Wine           23    24.15
    Chips          01     4.00
                        -----
                Total  1017.16

You have to do 2 different implementations of your program. One using the String module operator % to format, and another with the str.format(). Test your program with different prices (\(<10\) euros) and quantities (\(<100\) units) to test that the layout is always aligned.

```testruntile We added one sentence explicitly asking the students to test with some values and check the output.