Save a numpy array to disk

In this article we will learn how to save a numpy array to the disk. We will then see how to load it back from the disk into memory.

First, let't import numpy.

# Import modules
import numpy as np

We will generate an array to demonstrate saving and loading.

myarray = np.arange(10)

Numpy arrays can be save to the disk to the binary .npy format by using the save method.

np.save("C:\\temp\\arr.npy", myarray)

Once saved, it can be retrived from the disk by using the load method.

my_other_array = np.load("C:\\temp\\arr.npy")
my_other_array

array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])