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NotesPython

🐍 Free notes

Python Notes

A complete, ground-up Python course — fundamentals to OOP, with a live playground on every topic. Written by Munna Kumar (Code With Munna) — 22 topics in order, each with examples, key points, and 16 with a video lesson.

Start with Introduction to Python

Getting Started

1Introduction to PythonWhat Python actually is, how a script runs, and your first program.
2Variables & Data TypesHow Python stores values, and the built-in types you'll use every day.
3Type ConversionExplicitly converting between types with int(), str(), float(), and friends.

Operators & Strings

4OperatorsArithmetic, comparison, logical, and assignment operators — the building blocks of every expression.
5Strings in DepthIndexing, slicing, the methods you'll use constantly, and f-strings.

Control Flow

6Conditional Statementsif / elif / else — how Python makes decisions.
7Loopsfor and while loops, plus break, continue, and the loop else clause.

Data Structures

8ListsOrdered, mutable collections — indexing, slicing, and the methods you'll use daily.
9TuplesOrdered but immutable — when you want a fixed collection you can't accidentally change.
10DictionariesKey–value pairs — the structure behind most real-world data in Python.
11SetsUnordered collections of unique items — and the math-style operations that come with them.
12ComprehensionsBuilding lists, dicts, and sets in one readable line instead of a loop + append.

Functions

13Functions & ArgumentsDefining reusable logic: parameters, defaults, *args/**kwargs, and return values.
14Lambda FunctionsSmall, anonymous, one-expression functions — mainly used inline with sort/filter/map.

Errors & Files

15Exception Handlingtry/except/else/finally — handling things going wrong without crashing the program.
16File HandlingReading and writing files safely with open() and the with statement.

Modules & Advanced

17Modules & PackagesOrganizing code across files, the standard library, and installing third-party packages.
18Iterators & GeneratorsWhat actually powers a for loop, and how to lazily produce values with yield.
19DecoratorsFunctions that wrap other functions — how @decorator syntax actually works.

Object-Oriented Programming

20Classes & ObjectsThe blueprint-and-instance model — __init__, self, and instance methods.
21Inheritance & PolymorphismExtending classes with super(), overriding methods, and treating different types uniformly.
22Encapsulation & Dunder MethodsNaming conventions for 'private' attributes, @property, and hooking into Python's built-in syntax.

Looking for another subject?

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