Python’s x % y returns a result with the sign of y instead, and may not be exactly computable for float arguments. For example, fmod(-1e-100, 1e100) is -1e-100, but the result of Python’s -1e-100 % ...

Investigate whether the computation time of sqrt() varies with the size of the input. Measure the computation time for math.sqrt(), numpy.sqrt() and (** 0.5). ## How to measure computation time？

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.