Project 3: Bottles of Pop

You will write a program to sing the children's song about bottles of pop on the wall, with a twist.

What you need to do

You must write a program that will prompt the user to enter how many bottles they wish to start with, as well as how many bottles to take off the wall at a time. Then print each verse of the song, taking care that the number of bottles on the wall never becomes negative (it may go to zero, but not below).

You may assume all numbers entered are legal (you don't need to check for negative input, for example).

You may design your program in any way you see fit, though you should follow the guidelines for good programming that we've discussed in class: using comments, choosing appropriate variable names, making use of functions where appropriate, etc.

Sample Interaction

How many bottles should we start with? 10
How many do we take off the wall each time? 1
10 bottles of pop on the wall, 10 bottles of pop.
Take 1 down, pass them around, 9 bottles of pop on the wall.

9 bottles of pop on the wall, 9 bottles of pop.
Take 1 down, pass them around, 8 bottles of pop on the wall.

8 bottles of pop on the wall, 8 bottles of pop.
Take 1 down, pass them around, 7 bottles of pop on the wall.

7 bottles of pop on the wall, 7 bottles of pop.
Take 1 down, pass them around, 6 bottles of pop on the wall.

6 bottles of pop on the wall, 6 bottles of pop.
Take 1 down, pass them around, 5 bottles of pop on the wall.

5 bottles of pop on the wall, 5 bottles of pop.
Take 1 down, pass them around, 4 bottles of pop on the wall.

4 bottles of pop on the wall, 4 bottles of pop.
Take 1 down, pass them around, 3 bottles of pop on the wall.

3 bottles of pop on the wall, 3 bottles of pop.
Take 1 down, pass them around, 2 bottles of pop on the wall.

2 bottles of pop on the wall, 2 bottles of pop.
Take 1 down, pass them around, 1 bottles of pop on the wall.

1 bottles of pop on the wall, 1 bottles of pop.
Take 1 down, pass them around, 0 bottles of pop on the wall.

Another run:

How many bottles should we start with? 10 
How many do we take off the wall each time? 2
10 bottles of pop on the wall, 10 bottles of pop.
Take 2 down, pass them around, 8 bottles of pop on the wall.

8 bottles of pop on the wall, 8 bottles of pop.
Take 2 down, pass them around, 6 bottles of pop on the wall.

6 bottles of pop on the wall, 6 bottles of pop.
Take 2 down, pass them around, 4 bottles of pop on the wall.

4 bottles of pop on the wall, 4 bottles of pop.
Take 2 down, pass them around, 2 bottles of pop on the wall.

2 bottles of pop on the wall, 2 bottles of pop.
Take 2 down, pass them around, 0 bottles of pop on the wall.

Another run:

How many bottles should we start with? 10
How many do we take off the wall each time? 3
10 bottles of pop on the wall, 10 bottles of pop.
Take 3 down, pass them around, 7 bottles of pop on the wall.

7 bottles of pop on the wall, 7 bottles of pop.
Take 3 down, pass them around, 4 bottles of pop on the wall.

4 bottles of pop on the wall, 4 bottles of pop.
Take 3 down, pass them around, 1 bottles of pop on the wall.

Notice how the last run stops at 1 bottle on the wall, because with taking three down each time, we have to stop there.

Your code does not have to follow this exact script verbatim, but all the mentioned functionality should be there: asking the user for number of bottles and how many to remove each time, and printing each verse in turn, stopping before hitting a negative number.

What to turn in

Through Moodle, turn in your code as a file called pop_yourLastName_yourFirstName.py.