Python by Example

Python is a versatile, readable programming language ideal for beginners and experts alike. Please read the official documentation to learn more.

Python by Example is a hands-on introduction to Python using annotated example programs. Check out the first example or browse the full list below.

Unless stated otherwise, examples assume Python 3.10 or later. Try to upgrade to the latest version if something isn't working.

Table of Contents

Foundations

• Hello World
• Values
• Variables
• Constants
• For Loops
• While Loops
• If/Else
• Match
• Break and Continue

Data Structures

• Lists
• Slicing
• Tuples
• Dictionaries
• Sets

Functions

• Functions
• Multiple Return Values
• Variadic Functions
• Lambdas
• Closures
• Recursion

Iteration and Comprehensions

• Range and Enumerate
• Comprehensions

Object-Oriented

• Classes
• Methods
• Inheritance
• Dataclasses
• Enums
• Type Hints

Error Handling

• Exceptions
• Custom Exceptions

Modules and Packages

• Modules
• Packages

Async

• Async Basics
• Async Concurrency
• Async Queues

Strings and Formatting

• Strings
• String Formatting
• Regular Expressions

Data and Serialization

• JSON
• JSON Files

Date and Time

• Time
• Time Formatting

File I/O

• Reading Files
• Writing Files
• File Paths
• Directories
• Temporary Files

Command Line

• Command-Line Arguments
• Argparse
• Environment Variables

Testing and Tooling

• Testing
• Logging

Networking

• HTTP Client
• HTTP Server

Misc

• Random Numbers
• Exit

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Licensed under CC BY 4.0.

by Dariush Abbasi | source