Practical Data Wrangling

Why integers? 

It may seem peculiar at first to distinguish between int and float as fundamentally different data types. The first reason to make the distinction is that computers store these numbers differently and, for the sake of computer programming, there are a couple of scenarios in which it makes more sense for a programming language to use one or the other. For example, as we will see later in this chapter, using a float to index an array will cause an error and thus prevent the program from running.

If you find yourself using Python 2, you may notice that the interpreter treats arithmetic differently for integers than it does for floats, rounding the results, which can lead to some unexpected errors.

You can add, divide, and multiply ...