As noted above, NumPy arrays behave a lot like other Python objects, for the sake of convenience. For instance, they can be indexed like lists; arr[0] accesses the first element of a NumPy array.

Here’s how to use Cython to accelerate array iterations in NumPy. NumPy gives Python users a wickedly fast library for working with data in matrixes. If you want, for instance, ...

Building Random Arrays. NumPy has a few ways to build random number arrays. These methods are contained in the random library. In particular we will look at random.rand, random.randn, and ...