We’ve seen that Python provides us with quite a few conveniences “right out of the box.” Among these are built-in functions, that we as programmers can use—and reuse—in our code with little effort.

Returns the absolute value of a number x. If x is an integer or float, abs(x) returns x if x is positive or zero, and -x if x is negative. Returns x rounded to n digits after the decimal point. If n ...