Rounding up with pennies in Python?

Question

I am making a change program in python. The user must input a dollar amount and then the program will calculate the change in twenties, tens, fives, ones, quarters, dimes, n

Answer 1

Multiply the user's inputed dollar value by 100, convert to int, and work in units of pennies.

Integer arithmetic is dead simple (and exact). Floating point arithmetic is tricky and forces you to use more brain cells :) . Save brain cells and work entirely in ints.