Python in the Terminal


Overview

You’d like to learn to run Python in the terminal. Here we will cover:

  1. Installing Python in the terminal

  2. Running Python code in the terminal

Prerequisites

Concepts

Importance

Notes

Installing and Running Python

Helpful

  • Time to learn: 20 minutes


Installing Python in the Terminal

If running Python in the terminal, it is best to install Miniconda. You can do that by following the instructions for you machine.

Learn more about Conda here

Then create a Conda environment with Python installed by typing the following into your terminal:

$ conda create --name pythia_foundations_env python

You can test this by running python in the command line.

Running Python in the Terminal

On Windows, open Anaconda Prompt. On a Mac or Linux machine, simply open Terminal.

  1. Activate your Conda environment:

    $ conda activate pythia_foundations_env
    
  2. Create a directory to store our work. Let’s call it pythia-foundations.

    $ mkdir pythia-foundations
    
  3. Go into the directory:

    $ cd pythia-foundations
    
  4. Create a new Python file:

    $ touch mysci.py
    
  5. And now that you’ve set up our workspace, edit the mysci.py script using your favorite text editor (nano, e.g.):

    $ nano mysci.py
    
  6. Change the script to include the classic first command - printing, “Hello, world!”.

    print("Hello, world!")
    
  7. Save your file and exit the navigator. How to do this is dependent on your chosen text editor.

    • In Vim the command is :wq.

    • In Nano it is Ctrl + O to save and Ctrl + X to exit (where you will be prompted if you want to save it, if modified).

  8. In the terminal, execute your script:

    $ python mysci.py
    

Congratulations! You have just set up your first Python environment and run your first Python script in the terminal.


Summary

Running Python in the Terminal is a good option if you are familiar with Linux commands or scripting on a super computer. It requires the use of a text editor.

Resources and References