Why learn Python?
Python is the world's most popular programming language — used in web development, data science, machine learning, automation, and scripting. Companies like Google, Netflix, Instagram, and Spotify rely on Python. Its clean syntax makes it the ideal first language, and its vast ecosystem means you can build almost anything.
What you'll learn in this Python tutorial
This free, interactive Python course covers variables, data types, control flow, loops, functions, lists, dictionaries, tuples, classes, inheritance, encapsulation, dunder methods, dataclasses, generators, modules, error handling, JSON, HTTP requests, and async programming — all by writing and running real Python code in your browser.
29 topics · 252 hands-on lessons · all levels
Python tutorial topics
- 1Getting StartedWrite your first Python program. No setup required — just you and the editor. · 10 lessons
- 2VariablesStore information so your program can use it, change it, and reuse it. · 10 lessons
- 3Data TypesEvery value in Python has a type. Learn them all — strings, integers, floats, bo… · 12 lessons
- 4String MethodsSlice, search, split, join, and transform text. Strings are everywhere — master … · 9 lessons
- 5Print & FormattingPrint things properly. f-strings, format(), padding, precision — control every d… · 12 lessons
- 6Control FlowMake your program smart. Teach it to make decisions with if, elif, and else. · 11 lessons
- 7Logical OperatorsCombine conditions. and, or, not, in, is — the connectives that make decisions p… · 10 lessons
- 8LoopsStop writing the same code ten times. for and while loops do the repetition for … · 11 lessons
- 9ListsStore multiple values in one variable. Lists are Python's most-used data structu… · 10 lessons
- 10List ComprehensionsBuild lists in one line. The most Pythonic feature — write less, do more. · 8 lessons
- 11TuplesLike a list, but locked. Tuples are immutable — perfect for data that should nev… · 8 lessons
- 12SetsUnique collections with lightning-fast lookups. Remove duplicates, find intersec… · 8 lessons
- 13DictionariesStore data by name instead of position. Dictionaries give every value a meaningf… · 10 lessons
- 14FunctionsWrite once, run anywhere. Functions are the building blocks of every real progra… · 11 lessons
- 15Scope & ReferencesWhere variables live and how Python passes data. The stuff that trips up every i… · 8 lessons
- 16Classes & ObjectsBundle data and behaviour together. This is where Python gets really powerful. · 8 lessons
- 17InheritanceBuild on top of existing classes. Extend, override, and reuse without copying co… · 6 lessons
- 18EncapsulationHide the internals. Control access with properties, getters, setters, and privat… · 6 lessons
- 19Dunder MethodsMake your classes feel like built-ins. __str__, __repr__, __len__, __eq__, and o… · 8 lessons
- 20DataclassesLess boilerplate, more clarity. @dataclass generates __init__, __repr__, and __e… · 7 lessons
- 21DecoratorsWrap functions with extra powers. Used by Flask, Django, FastAPI, and every seri… · 7 lessons
- 22Protocols & ABCsWrite code that works with anything. Duck typing, Protocol, and ABC — Python's a… · 7 lessons
- 23Error HandlingThings go wrong. Handle it gracefully with try, except, else, finally, and custo… · 9 lessons
- 24Modules & PackagesSplit code across files. Import from the standard library. Install third-party p… · 8 lessons
- 25File I/ORead, write, and process files. Every real program needs to work with files. · 7 lessons
- 26Generators & IteratorsProcess infinite sequences without running out of memory. yield changes everythi… · 7 lessons
- 27Async & ConcurrencyDo multiple things at once without threads. async/await and asyncio make concurr… · 8 lessons
- 28HTTP in PythonMake HTTP requests and build simple servers. requests, urllib, and http.server. · 8 lessons
- 29JSON in PythonSpeak the language of APIs. json.loads, json.dumps, nested data, and custom seri… · 8 lessons
Who is this Python course for?
Absolute beginners learning to code for the first time, developers who want to add Python to their toolkit, and anyone building toward automation, backend, or data work.