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Learn Python
Learn Python from scratch with a free, interactive online course. Master Python basics, loops, functions, and object-oriented programming through hands-on lessons, real coding challenges, and AI-assisted hints — and earn a free certificate when you finish.
1,639,707+ codders enrolled
- Beginner friendly
AI-assisted coding help
Hands-on interactive lessons
Audio narration on every lesson
Quizzes to test your knowledge
Free certificate of completion
Syllabus
3 sections7 projects219 lessons171 challenges1,072 quiz questions01Section 1
Fundamentals
Build a strong foundation with essential concepts and basic skillsSTART LEARNINGIntroduction
3 lessons216- 01The LanguageChallenge
- 02Hello World!ChallengeQuizAudio
- 03CommentsQuizAudio
Variables
6 lessons838- 01NumbersChallengeMasteryQuizAudio
- 02StringChallengeMasteryQuizAudio
- 03BooleanChallengeMasteryQuizAudio
- 04Naming Conventions QuizAudio
- 05Empty VariablesChallengeQuizAudio
- 06Recap - Initialize VariablesChallenge
Operators Part 1
5 lessons931- 01Arithmetic OperatorsChallengeMasteryQuizAudio
- 02Modulo OperatorChallengeMasteryQuizAudio
- 03Arithmetic ShortcutsChallengeMasteryQuizAudio
- 04Recap - Simple MathChallenge
- 05Comparison OperatorsChallengeMasteryQuizAudio
Operators Part 2
5 lessons930- 01Logical Operators Part 1ChallengeMasteryQuizAudio
- 02Logical Operators Part 2ChallengeMasteryQuizAudio
- 03Recap - Simple LogicChallenge
- 04Logical Operators Part 3ChallengeMasteryQuizAudio
- 05Logical Operators Part 4ChallengeMasteryQuizAudio
Decision Making
4 lessons721- 01If StatementChallengeMasteryQuizAudio
- 02If - ElseChallengeMasteryQuizAudio
- 03Recap - Simple CalculatorChallenge
- 04Nested If - ElseChallengeMasteryQuizAudio
Basic IO
6 lessons831- 01OutputChallengeQuizAudio
- 02Output With VariablesChallengeQuizAudio
- 03InputChallengeMasteryQuizAudio
- 04CastChallengeMasteryQuizAudio
- 05Recap - Till 120Challenge
- 06Recap - True or FalseChallenge
Bill Split Calculator
Project5 lessons1- 01Welcome MessageChallenge
- 02Getting InputProject
- 03Calculating The Tip And TotalProject
- 04Splitting The BillProject
- 05Formatted OutputProject
Loops
8 lessons1444- 01For LoopChallengeMasteryQuizAudio
- 02While LoopChallengeMasteryQuizAudio
- 03BreakChallengeMasteryQuizAudio
- 04ContinueChallengeMasteryQuizAudio
- 05Recap - FactorialChallenge
- 06The Range FunctionChallengeMasteryQuizAudio
- 07Nested LoopChallengeMasteryQuizAudio
- 08Recap - Dynamic InputChallenge
Functions
6 lessons833- 01Declare a FunctionChallengeMasteryQuizAudio
- 02ArgumentsChallengeMasteryQuizAudio
- 03ReturnChallengeMasteryQuizAudio
- 04Recap - Sigma FunctionChallenge
- 05Recap - Validation FunctionChallenge
- 06Default ValuesQuizAudio
FizzBuzz with a Twist
Project4 lessons1- 01Game OverviewChallenge
- 02The FizzBuzz FunctionProject
- 03Looping The NumbersProject
- 04Adding The TwistProject
Lists Basics
7 lessons938- 01Declaring a ListChallengeQuizAudio
- 02Accessing List ElementsChallengeMasteryQuizAudio
- 03Modifying ListsChallengeMasteryQuizAudio
- 04List MethodsChallengeMasteryQuizAudio
- 05Recap - Product ListChallenge
- 06Recap - Reversed ListChallenge
- 07TupleQuizAudio
Iterating Over Sequences
4 lessons830- 01Iterating Over ElementsChallengeMasteryQuizAudio
- 02The Enumerate FunctionChallengeMasteryQuizAudio
- 03Iterating Over Strings Part 1ChallengeMasteryQuizAudio
- 04Iterating Over Strings Part 2ChallengeMasteryQuizAudio
Lists Advanced
4 lessons830- 01List Slicing Part 1ChallengeMasteryQuizAudio
- 02List Slicing Part 2ChallengeMasteryQuizAudio
- 03Sequence OperatorsChallengeMasteryQuizAudio
- 04MembershipChallengeMasteryQuizAudio
Daily Expense Tracker
Project7 lessons1- 01Project OverviewChallenge
- 02Exit The ProgramProject
- 03Add ExpenseProject
- 04View All ExpensesProject
- 05Total And AverageProject
- 06Clear AllProject
- 07Handling ErrorsProject
Final Challenges
3 lessons3- 01Flat Asterisk PyramidChallengeAudio
- 02Pattern FinderChallenge
- 03What To BuyChallenge
02Section 2
Logic & Flow
Develop problem-solving skills and create dynamic, interactive programsSTART LEARNINGVariables Exploration
6 lessons745- 01ConstantsChallengeQuizAudio
- 02Multiple Variable AssignmentsChallengeQuizAudio
- 03Swapping VariablesChallengeQuizAudio
- 04Placeholder VariablesChallengeQuizAudio
- 05Round NumbersChallengeMasteryQuizAudio
- 06List CastingChallengeQuizAudio
Dictionaries Part 1
5 lessons631- 01What is a Dictionary?QuizAudio
- 02Creating a DictionaryChallengeMasteryQuizAudio
- 03Accessing ValuesChallengeQuizAudio
- 04Modifying DictionariesChallengeMasteryQuizAudio
- 05Recap - Recipe ManagerChallenge
Dictionaries Part 2
5 lessons630- 01Dictionary MethodsChallengeQuizAudio
- 02Nested DictionariesQuizAudio
- 03Checking for KeysChallengeMasteryQuizAudio
- 04Looping Through DictionariesChallengeMasteryQuizAudio
- 05Recap - Frequency CounterChallenge
Contact Book Application
Project7 lessons1- 01Display MenuChallenge
- 02Add ContactProject
- 03View ContactProject
- 04Edit ContactProject
- 05Delete ContactProject
- 06List AllProject
- 07Everything TogetherProject
Advanced Decision Making
5 lessons729- 01Ternary OperatorChallengeMasteryQuizAudio
- 02Membership ChecksChallengeMasteryQuizAudio
- 03Identity ChecksChallengeMasteryQuizAudio
- 04Indentation ErrorsQuizAudio
- 05Recap - Vacation FilterChallenge
Sets Part 1
4 lessons524- 01What is a Set?ChallengeQuizAudio
- 02Basic OperationsChallengeMasteryQuizAudio
- 03Set MethodsChallengeQuizAudio
- 04Recap - Remove DuplicatesChallenge
Sets Part 2
6 lessons732- 01Mathematical Operations Part 1ChallengeQuizAudio
- 02Mathematical Operations Part 2ChallengeQuizAudio
- 03Recap - Treasure HuntChallenge
- 04Subsets and SupersetsChallengeQuizAudio
- 05Iterating Over SetsChallengeMasteryQuizAudio
- 06Recap - Tournament TrackerChallenge
Student Records Manager
Project7 lessons1- 01Project OverviewChallenge
- 02Add StudentProject
- 03Add GradeProject
- 04Is EnrolledProject
- 05Average GradeProject
- 06List by CourseProject
- 07Top StudentsProject
Advanced Data Aggregation
4 lessons723- 01Using SumChallengeMasteryQuizAudio
- 02Finding Minimum and MaximumChallengeMasteryQuizAudio
- 03Sorting Data EfficientlyChallengeMasteryQuizAudio
- 04Recap - Dictionary SorterChallenge
Basic List Comprehensions
6 lessons631- 01The SyntaxChallengeQuizAudio
- 02Creating Simple ListsChallengeQuizAudio
- 03Adding ConditionsChallengeQuizAudio
- 04Using Data AggregationChallengeQuizAudio
- 05Recap - House Of ListsChallenge
- 06Recap - Elements Of FreedomChallenge
Advanced Functions
7 lessons1146- 01Returning Multiple ValuesChallengeMasteryQuizAudio
- 02Lambda Functions Part 1ChallengeMasteryQuizAudio
- 03Lambda Functions Part 2ChallengeQuizAudio
- 04Recap Challenge - Lambda SortChallengeQuizAudio
- 05Recursive Functions Part 1ChallengeMasteryQuizAudio
- 06Recursive Functions Part 2ChallengeMasteryQuizAudio
- 07Recap - Sum Nested ListChallenge
Basic Error Handling
4 lessons323- 01What is Error Handling?QuizAudio
- 02The Try and Except BlockChallengeQuizAudio
- 03Handling Multiple ExceptionsChallengeQuizAudio
- 04Recap - Shopping Cart ErrorsChallenge
Inventory Management System
Project5 lessons1- 01Project OverviewChallenge
- 02Add ItemProject
- 03Update StockProject
- 04Check AvailabilityProject
- 05Generate ReportProject
Higher-Order Functions
4 lessons616- 01The Map FunctionChallengeMasteryQuizAudio
- 02The Filter FunctionChallengeMasteryQuizAudio
- 03Recap - Email ValidatorChallenge
- 04Recap - Number ProcessorChallenge
Final Challenges
3 lessons3- 01Smart Contact ManagerChallenge
- 02Word AnalyticsChallenge
- 03Data TransformerChallenge
03Section 3
Object Oriented Programming
Discover how to organize code with classes, objects, and reusable structuresSTART LEARNINGFundamentals of OOP
8 lessons755- 01External FilesChallengeQuiz
- 02Introduction to OOPChallengeQuiz
- 03Classes vs ObjectsChallengeQuiz
- 04The self ParameterChallengeQuiz
- 05MethodsChallengeQuiz
- 06AttributesQuiz
- 07Constructor Method (__init__)ChallengeQuiz
- 08Recap - Simple CalculatorChallenge
Decorators
4 lessons33- 01Introduction to DecoratorsQuiz
- 02Property DecoratorQuiz
- 03Static Method DecoratorQuiz
- 04Class Method DecoratorQuiz
Class Properties
4 lessons425- 01Instance vs Class VariablesChallengeQuiz
- 02Property DecoratorsChallengeQuiz
- 03Private AttributesChallengeQuiz
- 04Recap - Bank Account ManagerChallenge
Inheritance
6 lessons640- 01Basic InheritanceChallengeQuiz
- 02The super() FunctionChallengeQuiz
- 03Method OverridingChallengeQuiz
- 04Multiple InheritanceChallengeQuiz
- 05Method Resolution OrderChallengeQuiz
- 06Recap - Employee HierarchyChallenge
Polymorphism
5 lessons533- 01Method Overriding RevisitedChallengeQuiz
- 02Duck TypingChallengeQuiz
- 03Abstract Classes and MethodsChallengeQuiz
- 04Interface DesignChallengeQuiz
- 05Recap - Shape CalculatorChallenge
Encapsulation
5 lessons535- 01Public, Protected, Private MemChallengeQuiz
- 02Access ModifiersChallengeQuiz
- 03Information HidingChallengeQuiz
- 04Property Decorators AdvancedChallengeQuiz
- 05Recap - Student Records SystemChallenge
Special Methods
4 lessons426- 01Magic Methods IntroductionChallengeQuiz
- 02Operator OverloadingChallengeQuiz
- 03Container Magic MethodsChallengeQuiz
- 04Recap - Custom ListChallenge
Advanced OOP Concepts
5 lessons543- 01Composition vs InheritanceChallengeQuiz
- 02MixinsChallengeQuiz
- 03Static and Class MethodsChallengeQuiz
- 04Class DecoratorsChallengeQuiz
- 05Context ManagersChallengeQuiz
Advanced Arguments
2 lessons217- 01The *argsChallengeQuiz
- 02The **kwargChallengeQuiz
Design Patterns Part 1
5 lessons443- 01Intro to design patternQuiz
- 02Singleton PatternChallengeQuiz
- 03Factory PatternChallengeQuiz
- 04Observer PatternChallengeQuiz
- 05Strategy PatternChallengeQuiz
Design Patterns Part 2
6 lessons650- 01Command PatternChallengeQuiz
- 02Adapter PatternChallengeQuiz
- 03Decorator PatternChallengeQuiz
- 04Template Method PatternChallengeQuiz
- 05State PatternChallengeQuiz
- 06Composite PatternChallengeQuiz
Project: Library Management
Project6 lessons1- 01Project OverviewChallenge
- 02Book and User ClassesProject
- 03Borrowing SystemProject
- 04Search FunctionalityProject
- 05Admin InterfaceProject
- 06Testing and IntegrationProject
Final Challenges
4 lessons4- 01E-learning PlatformChallenge
- 02Banking SystemChallenge
- 03Game Character DevelopmentChallenge
- 04Vehicle Rental ServiceChallenge
Why learn Python with Coddy
- Learn Python online for free — no install, no Python interpreter to configure, no signup wall. Open the course and start writing real Python 3 code in your browser.
- Hands-on Python lessons that go deeper than a tutorial: every concept is paired with a coding challenge, so you write Python instead of just reading about it.
- AI-assisted hints unblock you when you get stuck on a Python exercise — without giving the answer away, so you actually learn Python programming, not just copy 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?
Yes — Python is widely considered one of the easiest programming languages to learn. Its syntax reads almost like English, indentation replaces curly braces, and you can write a working script in just a few lines. Most beginners on Coddy reach their first real Python program within the first hour of the course.
How long does it take to learn Python?
You can learn Python basics — variables, conditionals, loops, functions — in one to two weeks of daily practice. Reaching a job-ready level (data structures, OOP, common libraries) typically takes two to six months. Coddy's interactive Python course is structured so you make visible progress every session.
Where can I learn Python online for free?
Coddy is a free online platform to learn Python. The full interactive Python course — lessons, coding challenges, quizzes, and projects — is free to use, with an optional premium tier for extras. You don't need to install Python locally; everything runs in the browser.
How can I learn Python fast?
The fastest way to learn Python is to write Python code every day. Coddy's course is designed exactly for that: short interactive lessons, immediate hands-on exercises, and AI hints when you stall — so you spend time coding instead of waiting on long video lectures.
Do I get a Python certificate when I finish?
Yes. When you complete the Python course on Coddy you receive a free certificate of completion that 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?
After this course you can build small data-analysis scripts, automate repetitive tasks, write web scrapers, create simple games, or move into more advanced areas like 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.
