How to save array as csv file with Numpy? : Pythoneo

Let’s learn how to save array as csv file with Numpy. We will use savetxt method.

How to use python savetxt method

Numpy savetxt function let us save Numpy array as text file. We can save an array as comma separated values as well.

To save an array to csv extension file you need to use savetxt file like in the below example.

import numpy as np

my_array = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9]).reshape(3, 3)
to_csv = np.savetxt("my_matrix.csv", my_array, delimiter=",")

Checking np.savetxt(“my_matrix.csv”, my_array, delimiter=”,”) you may know the syntax of savetxt method.

first one is file name, you can also put a path to the file here

my_array is an array to would like to dump as csv

delimiter is a comma since it is csv file

Using Numpy savetxt method you can also save your array as the other files like txt.