IDLE is a Integrated Development Environment (IDE).which has been bundled with the default implementation of the language. IDLE is purely Written in Python.

When you install Python, an IDE named IDLE is also installed. You can use it to run Python on your computer. It's a decent IDE for beginners.

When you open IDLE, an interactive Python Shell is opened.

How to run a program in Python IDLE

First, launch the Python IDLE shell

Click on file>new file

Write Python program

Save file with the .py extension

Go to Run > Run Module or simply click F5.

Congratulations! You just wrote your first program in Python.