Question

I am looking at the solution for problem set 1, problem 3. I cannot understand why does it add 0.004999 to monthly payment? The code is: monthly_payment = round(monthly_payment + 0.004999, 2)

Answer 1

If you look at python's official documentation for round() (link: http://docs.python.org/2/library/functions.html#round ), you'll notice a not on floats there. Adding 0.004999 just makes sure that for any significant decimal part of monthly_payment, you will round it up. This is just to make sure your balance can not be something like -0.01 (because, formally, this would mean, you haven't payed this last cent to the bank).

Answer 2

I am only showing 2 questions for Problem Set 1. What am I missing here?