Setting the Python Path Variable in Linux: A Beginner’s Guide

Welcome to the world of Linux and Python! If you’re scratching your head wondering what a Python Path is or how to set it up on your Linux machine, you’re in the right place. This guide is tailored for absolute beginners and explains all terms in a straightforward manner.

What is Python?

Python is a popular programming language known for its simplicity and readability. It can be used for everything from web development to machine learning.

What is the Python Path?

In Linux, the Python Path is an environment variable that tells your system where to look for Python installations. By setting this up, you can run Python from any directory, making it a lot easier to work with Python programs.

What is the Console Window?

The console window, often called the Terminal, is the text-based interface for interacting with your Linux system. It’s a place where you can type commands and execute them.

Step 1: Launch a Console Window (Terminal)

1. You can usually open a Terminal by pressing Ctrl + Alt + T.
2. Alternatively, you can search for “Terminal” in your application menu and click on it.

Step 2: Find Where Python is Installed

1. To find out where Python is installed, type the following command in the Terminal: which python3
2. This will return the directory where Python 3 is installed, like /usr/bin/python3.

Step 3: Check Python Version

1. To find out what version of Python is installed, type: python3 --version
2. This will display the version of Python that’s installed, like Python 3.9.1.

Step 4: Set the Python Path

1. Open your .bashrc file by typing: nano ~/.bashrc Here, nano is a text editor, and .bashrc is a script that runs whenever you open a new Terminal window.
2. Scroll to the end of the file and add the following line: export PATH=$PATH:/path/to/your/python3 Replace /path/to/your/python3 with the directory you found in Step 2.
3. Save and exit by pressing Ctrl + X, then Y, then Enter.
4. Apply the changes by typing: source ~/.bashrc

Step 5: Verify the Python Path

1. Open a new Terminal window.
2. Type python3 --version.

If you see the Python version, congratulations! You’ve successfully set the Python Path on your Linux machine.

In Summary

Setting the Python Path in Linux makes your Python programming journey more convenient. It allows you to run Python commands from any directory in the Terminal, making your workflow much smoother. Happy coding!