Add Python Learning Resource

[Nandika32]

What does this PR do?

Add resource(s) | Remove resource(s) | Add info | Improve repo

IMPORTANT

• Read our contributing guidelines.
• Is this a revision of a previously submitted PR? If so, STOP! Go back, reopen the PR, and add commit(s) the branch you previously submitted. Please don't make the job of reviewing more difficult by hiding previous work.

For resources

Description

Why is this valuable (or not)?

How do we know it's really free?

For book lists, is it a book? For course lists, is it a course? etc.

Checklist:

• Search for duplicates.
• Include author(s) and platform where appropriate.
• Put lists in alphabetical order, correct spacing.
• Add needed indications (PDF, access notes, under construction).
• Used an informative name for this pull request.

Follow-up

• Check the status of GitHub Actions and resolve any reported warnings!

What this PR does

• Adds a Python learning resource to the Python section of the list.

Why

This resource is freely available online and useful for beginners learning Python.
It fits the scope and contribution guidelines of this repository.

Checklist

• The resource is free to read
• The link works
• The entry follows the existing format
• Alphabetical order preserved (if applicable)