Beginning with Python

[LL-user]

You're welcome

Regarding gedit (I'm also using more and more instead of leafpad), sorry I don't get your question.
Here is some general info in the hope it provides you some answer. Otherwise let us know

[1] Syntax highlighting

gedit provides syntax highlighting for a wide range of markup, programming, and scientific languages. If gedit recognizes the syntax being used when you open a file, it will automatically highlight the text.

If your syntax or language is not highlighted upon startup, you can select the appropriate syntax or language by clicking View ▸ Highlight Mode, and then choosing the desired syntax. Alternately, you can select the syntax name from a list at the bottom of the gedit window.

[2] How do I add a syntax highlighter format to Gedit?

[3] Create a custom syntax highlight in gedit

Hope that helps