Python Hello World

In this lesson, we will create a 'Hello World' program in Python.

Lesson content

In this lesson, we will learn:

• What hello world programs are
• Coding a hello world program in Python
• How our code works
• Running Python code through the terminal
• Program output

Hello world programs

A 'hello world' program is a simple program that prints the string "Hello world" to the console.

A string is another word for text.

The console is the text-based window you see when opening a terminal or command prompt.

Why use a hello world program?

Hello world programs are used because they are very simple to write.

They are a good introduction to programming, as they are an easy way to learn the basic syntax (grammar) of the language.

Coding

Now let's get coding!

In this chapter, we will open our program in a text editor, and write our first line of code!

Opening the file

First, we need to open up our program.

If you are using a code editor, such as VS Codium, open your project folder using the 'Open Folder' feature.

Otherwise, simply open hello.py in a normal text editor using the 'Open' button.

Writing the code

Inside hello.py, write the following code:

print("Hello world")

We will go over how this code works in the next chapter.

How it works

Our program contains 3 main tokens:

• print
• ()
• "Hello world"

The print function

In our program, we call the print function.

Python course

This lesson is part of the Python course.

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