Below are two ways of accomplishing the same task: loading data from a .csv text file with three columns of data (say x, y, and \(\delta y\) ) and one row of text preceding the data.  Each column of data becomes a Numerical Python array. In this example, the array names are angleV_pd, and V_pd_delta
This first method (used, for example,  in the Python-based textbook Computational Physics by Mark Newman) imports  individual functions  and modules from numpy as needed. We call this the direct numpy import style. Here is an example: