Python

15 lessons — from the very basics to pro-level patterns.

Basics

1. Variables & Data Types

Numbers, text, true/false — the building blocks

2. Operators & Expressions

Math, comparisons, and logic in one place

3. Strings & Formatting

Slice, format, and play with text

4. Conditionals

Make your code choose — if this, do that

Repeat stuff without repeating yourself

Collections

6. Lists & Tuples

Ordered collections you can grow, shrink, and slice

7. Dictionaries & Sets

Look things up by name instead of by number

Functions

Package your code so you can reuse it

9. Comprehensions

Build lists, dicts, and sets in a single line

Intermediate

Read and write files like a pro

11. Error Handling

Catch mistakes before they crash your program

12. Classes & OOP

Create your own types with data and behavior

13. Modules & Imports

Organize code into reusable pieces

Advanced

14. Lambda, Map & Filter

Tiny functions that do big things

15. Decorators & Closures

Wrap functions to add superpowers