How to Install NumPy using Python

NumPy is a Python library that stands for Numerical Python. It is widely used for performing numerical computations and provides support for large, multi-dimensional arrays and matrices. In addition to this, it offers a variety of mathematical functions to operate on these arrays efficiently. NumPy is commonly utilized by developers in areas like scientific computing, engineering, data science, and machine learning.

In this tutorial, we’ll demonstrate how to install NumPy using Python on Windows and Linux operating systems.

Installing NumPy Using Python on Windows

To install NumPy on Windows, first install Python and ensure it’s added to the PATH, confirm that pip is installed, and then use it to install NumPy. Finally, confirm the installation by checking NumPy’s version in the Python interpreter.

Let’s go through the following steps to learn how to install NumPy Python on Windows:

Step 1: Install Python on Widows

Visit the official Python website to download the latest Python version for your Windows system. After downloading, find the installer file and click the ‘Install’ button to begin the Python installation. Be sure to select the option to add Python to the PATH. Read our dedicated guide to learn more about installing Python on Windows. 

You can check the Python version by executing the command below:

python --version

Step 2:  Install Pip 

Next, make sure pip for Python is installed on your Windows system. Pip is generally installed with Python. You can confirm its installation by running the following command:

pip --version

Step 3: Install NumPy Python Windows

Once Python and pip are successfully installed on your system, execute the command below to install NumPy on Windows:

pip install numpy

Step 4: Verify the NumPy Installation on Windows

Finally, you can confirm the NumPy installation on Windows by checking its version. For this purpose, first, open a Python interpreter by typing python in the CMD and then execute the following script:

import numpy 
print(numpy.__version__)

The output confirms that numpy 2.1.3 has been successfully installed on our system.

Installing NumPy Using Python on Linux

NumPy is a commonly used Python library to perform numerical computations. You can follow the below-listed steps to install it on Linux using Python:

Step 1: Install Python

On most modern Linux distributions Python comes preinstalled. You can verify it by executing the following command in the terminal:

python3 --version

In case, Python is not installed on your Linux system, you can install it by running the following command:

sudo apt install python3

Step 2: Install Pip

After installing Python, make sure Pip is also installed on your system:

pip3 --version

If pip is not installed on your Linux system, you must read our dedicated guide on how to install pip on Windows and Linux.

Step 3: Install NumPy Python Linux

After pip is successfully installed, use it to install NumPy by running the following command:

pip3 install numpy

Alternatively, you can use a trusted PyPI mirror to install NumPy using Python on Linux:

pip3 install numpy --index-url https://mirrors.aliyun.com/pypi/simple/

Step 4: Verify the NumPy Installation

Now type python3 in the terminal to open the Python interpreter. After this, execute the following script to import numpy:

import numpy

Then run the command below to show the installed version of the NumPy on Linux:

print(numpy.__version__)

The output verifies that NumPy has been successfully installed on Linux:

This is how you can install NumPy using Python on Windows and Linux operating systems.

Conclusion

NumPy is a robust Python library designed for numerical calculations, offering support for large, multi-dimensional arrays and matrices, along with a range of mathematical functions. In this article, we discussed how to install NumPy on both Windows and Linux. On Windows, we covered installing Python, ensuring pip is set up, and using it to install NumPy. For Linux, we followed similar steps to verify Python and pip installations before installing NumPy via the terminal. These steps enable you to set up NumPy on your system and start using it for efficient numerical tasks.

FAQ