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 ...

NumPy Arrays. Vectors and Matrices are created as instances of a numpy array. We can think of a 1D NumPy array as a list of numbers (or row-vector), and a 2D number array as a matrix. 1D Arrays. Let's ...