Basic Ways to Build Arrays. We can cast an ordinary python list as a NumPy one-dimensional array. import numpy as np my_list = [1, 2, 3] np. array (my_list) ... We start by generating an array of ...

When you call the Cython function in your Python code, send the entire NumPy array object as an argument for that function call. Perform all the iteration over the object in Cython .