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How to Download and Install NumPy in Python?

Numpy is a Python library that is often used to do scientific computing and data analysis. It gives you a powerful array object and functions that make it easy to work with multi dimensional arrays. Numpy is used a lot in physics, engineering, finance, data science, and other fields. 

In this tutorial, we will learn about the following

• NumPy Installation Prerequisites
• Installation of NumPy in Anaconda
• Installation of NumPy in Google Colab

NumPy Installation Prerequisites

Before installing NumPy on Windows, you need to have the following prerequisites installed:

1. Python: NumPy is a Python package and therefore requires Python to be installed on your Windows machine. You can download Python from the official Python website: https://www.python.org/downloads/

2. Pip: Pip is the package installer for Python and is usually installed with Python by default. However, if you don't have Pip installed, you can install it using the following command in the Command Prompt: "python -m ensurepip --default-pip"

3. Setuptools: Setuptools is a package that provides a way to package and distribute Python libraries and applications. You can install Setuptools using the following command in the Command Prompt: "pip install setuptools"

Once you have these prerequisites installed, you can proceed to install NumPy using the "pip install numpy" command in the Command Prompt.

Installation of NumPy in Anaconda 

 Here's a step-by-step guide to install NumPy in  Anaconda : Download Anaconda 

1. Open Anaconda Navigator:

   • Click on the Anaconda Navigator icon on your desktop, or open it from the Start Menu or Applications folder.

2. Launch an environment:

   • If you have created an environment previously, select the environment from the list of environments in Anaconda Navigator.
   • If you don't have an environment created, create one by clicking on the "Create" button in the environments tab.

3. Open a terminal:

   • Click on the "Launch" button for the environment you want to use.
   • Click on the "Open Terminal" button to open a terminal window.

4. Install NumPy:

   • In the terminal window, type the following command and press Enter:
   • conda install numpy
   • This will start the installation process for NumPy. You may be asked to confirm the installation by typing "y" and pressing Enter.

5. Verify the installation:

   • Once the installation is complete, you can verify that NumPy is installed by typing the following command in the terminal window and pressing Enter:
   • python -c "import numpy; print(numpy.__version__)"

Click on the Launch Button on CMD.exe Prompt Box

Installation of NumPy in Google Colab

Steps to install  NumPy on Google Colab:

1. Open your web browser:

   • Open any web browser such as Google Chrome, Mozilla Firefox, or Microsoft Edge.

2. Go to Google Colab website:

   • In the address bar of your browser, type in "colab.research.google.com" and press Enter to go to the Google Colab website.

3. Create a new notebook:

   • Click on the "New Notebook" button on the Google Colab homepage.

4. Install NumPy:

   • In the first cell of the notebook, type the following command and press Enter:
   • !pip install numpy
   • This will start the installation process for NumPy. The exclamation mark at the beginning of the command tells Colab that this is a terminal command.

5. Verify the installation::

   • Once the installation is complete, you can verify that NumPy is installed by typing the following command in the next cell of the notebook and pressing Enter:
   • import numpy as np
     print(np.__version__)
   • This should print the version number of NumPy that you just installed.

That's it! NumPy should now be installed in your Google Colab notebook. You can now use NumPy functions and arrays in your Colab notebook.