Lilly Tech Systems
Basics of Python
Master the fundamentals of Python programming — from variables and control flow to functions, data structures, object-oriented programming, and professional best practices.
Your Learning Path
Follow these lessons in order, or jump to any topic that interests you.
1. Introduction
What is Python? Its history, why it's popular, Python 2 vs 3, and where Python is used today.
2. Installation & Setup
Install Python on any OS, configure PATH, use pip, create virtual environments, and pick an IDE.
3. Variables & Data Types
Integers, floats, strings, booleans, None, type conversion, f-strings, and math operators.
4. Control Flow
if/elif/else, comparison and logical operators, for/while loops, comprehensions, and more.
5. Functions
Define functions, parameters, return values, *args/**kwargs, lambda, scope, and decorators.
6. Data Structures
Lists, tuples, dictionaries, sets, comprehensions, and when to use each one.
7. File I/O
Read and write files, context managers, CSV, JSON, and exception handling.
8. Object-Oriented Programming
Classes, objects, inheritance, polymorphism, encapsulation, magic methods, and properties.
9. Best Practices
PEP 8, naming conventions, debugging, testing, virtual environments, and common mistakes.
What You'll Learn
By the end of this course, you'll be able to:
Write Python Programs
Create scripts using variables, control flow, functions, and data structures confidently.
Work with Files
Read, write, and process files in CSV and JSON format with proper error handling.
Use OOP Principles
Design classes with inheritance, encapsulation, and Python-specific patterns like properties.
Follow Best Practices
Write clean, PEP 8-compliant code and debug effectively with testing frameworks.