Thonny is a commonly-used Integrated Development Environment (IDE) for Python development.
On many systems there is an icon for you to double-click to start up Thonny.
If you’re using Linux, you can either search for the Thonny
application or enter this at a
command-line prompt (the “unix-%” is the operating
system prompt, you don’t need to type that, and the
“&” tells unix to run the process in the
background, letting you continue to use the command prompt):
unix-%thonny &
Regardless of how you start your IDE, you should see a screen similar to this:
This screen shows the development environment with a sample program file
named main.py loaded into the editor pane. You can ask Thonny
to show you the “Files” pane on the left by choosing View→Files.
Thonny provides a rather standard interface for creating program files, editing code, and saving those files. Run your programs by pressing the green arrow in the tool bar.