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Learn Python

A free, interactive online Python course. You write code on every lesson, get AI hints when you're stuck, and earn a free certificate when you finish.

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View syllabusPython playground

1,859,298+ codders enrolled

219 lessons172 challenges1,072 quiz questions

  • Beginner friendly
  • sparkles iconAI-assisted coding help
  • hint iconHands-on interactive lessons
  • volume On iconAudio narration on every lesson
  • quiz iconQuizzes to test your knowledge
  • certificate iconFree certificate of completion

Syllabus

3 sections7 projects219 lessons172 challenges1,072 quiz questions
  1. Section 1

    Fundamentals

    Start sectionStartExpandCollapse    Build a strong foundation with essential concepts and basic skills77 lessons97 challenges342 questions3 projects

    Introduction

    3 lessons316

    Variables

    6 lessons838

    Operators Part 1

    5 lessons931

    Operators Part 2

    5 lessons930

    Decision Making

    4 lessons721

    Basic IO

    6 lessons831

    Bill Split Calculator

    Project5 lessons1

    Loops

    8 lessons1444

    Functions

    6 lessons833

    FizzBuzz with a Twist

    Project4 lessons1

    Lists Basics

    7 lessons938

    Iterating Over Sequences

    4 lessons830

    Lists Advanced

    4 lessons830

    Daily Expense Tracker

    Project7 lessons1

    Final Challenges

    3 lessons3
  2. Section 2

    Logic & Flow

    Start sectionStartExpandCollapse    Develop problem-solving skills and create dynamic, interactive programs78 lessons77 challenges330 questions3 projects

    Variables Exploration

    6 lessons745

    Dictionaries Part 1

    5 lessons631

    Dictionaries Part 2

    5 lessons630

    Contact Book Application

    Project7 lessons1

    Advanced Decision Making

    5 lessons729

    Sets Part 1

    4 lessons524

    Sets Part 2

    6 lessons732

    Student Records Manager

    Project7 lessons1

    Advanced Data Aggregation

    4 lessons723

    Basic List Comprehensions

    6 lessons631

    Advanced Functions

    7 lessons1146

    Basic Error Handling

    4 lessons323

    Inventory Management System

    Project5 lessons1

    Higher-Order Functions

    4 lessons616

    Final Challenges

    3 lessons3
  3. Section 3

    Object Oriented Programming

    Start sectionStartExpandCollapse    Discover how to organize code with classes, objects, and reusable structures64 lessons53 challenges400 questions1 project

    Fundamentals of OOP

    8 lessons755

    Decorators

    4 lessons33

    Class Properties

    4 lessons425

    Inheritance

    6 lessons640

    Polymorphism

    5 lessons533

    Encapsulation

    5 lessons535

    Special Methods

    4 lessons426

    Advanced OOP Concepts

    5 lessons543

    Advanced Arguments

    2 lessons217

    Design Patterns Part 1

    5 lessons443

    Design Patterns Part 2

    6 lessons650

    Project: Library Management

    Project6 lessons1

    Final Challenges

    4 lessons4

Python courses

Hands-on Python courses, free to start in your browser.

Interview PreparationData StructuresGraph Algorithms Courses

Beginner Challenges - Practice Basic Concepts

Popular

Put your beginner coding knowledge to test and try to solve this programming challenges, use any language you want, Happy Coding!

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Certificate on completion

  • 20
  • 20

Coding Problems

Popular

Put your programming problem solving skills to the test using the exercises with different difficulties in this course. Designed for coders with some prior knowledge of the basic syntax in any programming language.

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Certificate on completion

  • 32
  • 31

Stack - Data Structures Series #1

In this course, you will learn about the Stack data structure, create a Stack from zero using your preferred language, and practice coding challenges with it!

Data Structures
  • 13
  • 6
  • 1

Pandas Analytics

In this course you will learn how to handle tables in python using pandas

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Certificate on completion

  • 19

Coding Problems: Volume 2

Put your programming problem solving skills to the test using the exercises with different difficulties in this course. Designed for coders with some prior knowledge of the basic syntax in any programming language. This course is an extension of the first Coding Problems

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Certificate on completion

  • 25
  • 24

Numpy Fundamentals

Learn to master powerful numerical computations in Python for data science with this concise, hands-on course.

  • 18
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See all 68 Python courses →
What you get
Everything you'll use to learn to code

Learn by Doing

Write real code, query databases, build websites, and master AI prompts. Our interactive lessons cover every skill modern developers need.

playground.js
Code Editor
1const greeting = "Hello, Coddy!"
2function sayHi(name) {
3    return greeting + " " + name
4}
5
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Input
"Alex"
Output
"Hello, Coddy! Alex"

Build Your Coding Streak

Stay consistent and watch your progress grow! Track your daily coding habit, protect your streak with freeze days, and earn rewards for showing up every day.

12 days streak

Return tomorrow to keep your streak!

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Double or Nothing

Day 5 of 7

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Code Anywhere, Anytime

Take your coding journey on the go! No setup, no downloads - just open and start coding. Available on iOS, Android and Web with 4.9 star ratings.

Python
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CONTINUE
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Journey
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You're Not Alone in This

Compete on global leaderboards, invite friends to earn rewards, and celebrate each other's wins. Coding is better with friends!

Challenger League
Challenger LeagueTop 7 advance
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Alex7+ Days
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Morgan7+ Days
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Every way to learn

Read, listen, test yourself, ask the AI, or look up anything you've already covered. Every lesson meets you where you are.

Intro to Variables
Audio

A variable is a named container that stores a value you can reference later in your program.

In Python, you create one by writing the name, an equals sign, then the value you want to store.

The value can change over time - reassigning the name simply points it to a new value.

1xSarah

Prove Your Skills

Earn certificates for every course you complete. Add them to your LinkedIn profile and resume to showcase your coding expertise to employers.

CoddyCertificate of Completion
This certifies thatJohn Doehas successfully completed
PythonPython Fundamentals
Verified
DateJan 2026
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Why learn Python with Coddy

  • Free, no install, no Python interpreter to configure, no signup wall. Open the course and start writing real Python 3 code in your browser.
  • Every concept comes with a coding challenge, so you spend the lesson writing Python instead of just reading about it.
  • AI hints unblock you when an exercise stops making sense, without handing over the answer. That's the difference between learning Python and copying it.
  • Free Python certificate of completion you can share on LinkedIn or your resume - proof you finished an interactive Python course, not just watched videos.

Frequently asked questions about learning Python

Is Python easy to learn?

Python is one of the easier programming languages to pick up. The syntax reads close to English, indentation replaces curly braces, and a working script can be three or four lines. Most beginners on Coddy reach their first real Python program within the first hour.

How long does it take to learn Python?

Python basics - variables, conditionals, loops, functions - take one to two weeks of daily practice. Reaching a job-ready level (data structures, OOP, common libraries) typically takes two to six months. The course is structured so you can see your own progress every session.

Where can I learn Python online for free?

Coddy is a free online platform to learn Python. The interactive Python course - lessons, coding challenges, quizzes, and projects - is free, with an optional premium tier for extras. Nothing installs locally; everything runs in the browser.

How can I learn Python fast?

Write Python every day. Coddy's course is set up for that: short interactive lessons, immediate hands-on exercises, and AI hints when you stall. The bottleneck is reps, not video length.

Do I get a Python certificate when I finish?

Yes. Finishing the Python course gives you a free certificate of completion you can share on LinkedIn or add to your resume. It's not a university accreditation, but it's a verifiable signal that you've worked through a structured, interactive Python course.

What can I build after learning Python?

Small data-analysis scripts, automations for repetitive tasks, web scrapers, simple games, or a step into web development with Django/Flask, data science with pandas and NumPy, or machine learning. The course finishes with real-world Python projects so you have something to point at.
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