Python 3 Tutorial chapters
  1. 01Python Basics & Environment Setup
  2. 02Operators & Expressions
  3. 03Control Flow & Loops
  4. 04Functions & Scope
  5. 05Data Structures: Lists & Tuples
  6. 06Dictionaries & Sets
  7. 07Strings & Text Processing
  8. 08Object-Oriented Programming (OOP)
  9. 09File Handling & I/O
  10. 10Exception Handling
  11. 11Advanced Python: Iterators & Decorators
  12. 12Modules & Virtual Environments

Chapter 1

Python Basics & Environment Setup

6 topics in 5 parts

Key ideas

Input Size (n) → Time (T) ↑ O(1) O(log n) O(n) O(n log n) O(n²) O(2ⁿ)
Python Basics & Environment Setup
Pattern / FeatureIdiomatic Pythonic ApproachSub-optimal Anti-pattern
Data ProcessingComprehensions & Generators (Memory efficient)Manual loops with repeated append calls
Resource HandlingContext Managers (with statement)Manual open() and close() calls
Type AnnotationsType hinting via typing moduleUnannotated dynamic parameters
Dictionary Lookupsdict.get(key, default) or defaultdictKey check followed by indexed access

All 6 topics in Python Basics & Environment Setup

  1. Overview

    • What is Python & Key Features

  2. Setup

    • Python 3 Installation & VS Code IDE

  3. Basics

    • Syntax Rules, Indentation & Comments

  4. Variables

    • Variables, Dynamic Typing & Memory ID

  5. Types

    • Primitive Data Types (int, float, bool, str)
    • Type Casting (Implicit vs Explicit)