Python
The foundation of everything. Start with zero experience and build real Python skill class by class — from your first print statement to object-oriented programming and 15+ real-world projects.
https://github.com/waleedkhokar/python-ai-engineering-journey/tree/main/01%20Python-Beginner-to-Advanced — so you always land in the right place, never on a guessed sub-folder.What You Will Learn
All Classes
Every class in this course, in order — with exactly what each class teaches. Notes, code and interview prep for each class live in the course folder on GitHub.
Python Introduction & Foundations
Setup, print, variables, data types, type hints, and your first program.
Strings Formatting & Text Processing
String methods (46 total), f-strings, .format(), escape characters, whitespace handling.
Python Operators & Expressions
Arithmetic, assignment, comparison, logical, identity, membership and bitwise operators, ASCII, the walrus operator.
Lists — Indexing & Slicing
List creation, indexing, slicing, methods (append, extend, pop, sort), list comprehension.
Python Loops & Iteration Mastery
for loops, while loops, nested loops, break, continue, pass, range().
Conditional Logic & If-Else
if, elif, else, nested conditions, the ternary operator, truthy and falsy values.
Dictionaries & Key-Value Data
Dict creation, access, methods (keys, values, items, get, update), nesting.
Advanced Dictionaries & JSON
JSON parsing, the json module, nested dicts, merging, dict comprehension.
Loops, Input & Control Flow
User input, while loops with input, validation, menu-driven programs.
Python Functions Introduction
def, parameters, return values, default arguments, *args, **kwargs, scope, lambda.
Errors & Exception Handling
try, except, else, finally, raise, custom exceptions, common errors.
Python File Handling
Read and write files, open modes, context managers, CSV, JSON, OS paths.
Object-Oriented Programming
Classes, objects, __init__, self, inheritance, encapsulation, polymorphism, magic methods.
Real-World Python Projects
15+ real projects — calculator, to-do list, weather app and more.
Projects in this course
Build them all — each project lives in the course folder on GitHub.
Interview Preparation
Every class in this course includes interview preparation. Open the course folder on GitHub for the full material.
Common Interview Questions
The questions interviewers actually ask on this course's topics, with clear, structured answers.
Open Interview PrepCoding Challenges
Hands-on problems for each class, so you can prove the skill, not just describe it.
Open Interview PrepCommon Mistakes to Avoid
The errors beginners make with these topics — and how professionals avoid them.
Open Interview PrepBest Practices
How working engineers write this code in production: clean, tested and maintainable.
Open Interview Prep