How to set max output width in NumPy?

Learn, how to set max output width in Python NumPy?
By Pranit Sharma Last updated : December 22, 2023

NumPy is an abbreviated form of Numerical Python. It is used for different types of scientific operations in python. Numpy is a vast library in python which is used for almost every kind of scientific or mathematical operation. It is itself an array which is a collection of various methods and functions for processing the arrays.

Problem statement

Suppose that we are working on a large array and on printing the array by performing some operation, we face some trouble in seeing the entire array. We need to find a way to set the max output width in numpy.

NumPy - Setting max output width

For this purpose, set_printoptions() method will work. It will take a parameter called linewidth which means only edgeitems and the window's width will determine when newlines/wrapping occurs.

Let us understand with the help of an example,

Python code to set max output width in NumPy

# Import numpy
import numpy as np

# Creating a numpy array
arr = np.array([i for i in range(10000)])

# Display original array
print("Original Array:\n",arr,"\n")

Output

np.set_printoptions(edgeitems=30, linewidth=100000,
    formatter=dict(float=lambda x: "%.3g" % x))

# Display original array
print("Original Array:\n",arr,"\n")