Python Sandbox

Python Sandbox - Run Python Code Online Free

A powerful online Python sandbox that runs Python code directly in your browser using Pyodide. No installation required, no server-side execution. Perfect for learning Python, testing code snippets, debugging, and quick prototyping. Supports Python 3.x with standard library.

What is Python Sandbox?

Python Sandbox is an online Python interpreter that runs entirely in your browser. It uses Pyodide, which is CPython compiled to WebAssembly, allowing you to:

- Run Python code without installing anything
- Test code snippets instantly
- Learn Python interactively
- Debug and experiment with code
- Work offline after initial load

The sandbox supports most Python 3.x features and standard library modules.

How do I use this Python Sandbox?

Using the Python Sandbox is straightforward:

1. Wait for the Python environment to load (first time only)
2. Write or paste your Python code in the editor
3. Click 'Run Code' to execute
4. View the output in the console below
5. Use 'Clear' to reset the editor
6. Try example codes to learn Python basics

The environment persists between runs, so variables and functions remain available unless you reset.

What Python features are supported?

The sandbox supports most Python 3.x features:

- All basic Python syntax (variables, loops, conditionals)
- Functions and classes
- List, dict, set, tuple operations
- String manipulation and formatting
- File I/O (virtual filesystem)
- Most standard library modules
- Exception handling
- Decorators and generators
- List comprehensions

Some limitations:
- No network requests (fetch, urllib)
- No GUI libraries (tkinter, pygame)
- Limited threading support
- Some C-extension modules may not work

Is my code safe and private?

Yes, your code is completely safe and private:

- All code runs in your browser only
- No code is sent to any server
- No logging or tracking of your code
- Works completely offline after initial load
- Code is sandboxed and cannot access your system

The Pyodide environment is isolated and secure, running in a WebAssembly sandbox.

Can I install Python packages?

The sandbox comes with many common packages pre-installed. However, installing additional packages via pip is limited:

- Many pure-Python packages work
- Packages with C extensions may not work
- Use micropip for package installation

Example:
import micropip
await micropip.install('package-name')

Note: Not all PyPI packages are compatible with Pyodide.

What are the code examples for?

The code examples help you:

- Learn Python basics quickly
- See working code patterns
- Understand Python syntax
- Get started with common operations

Examples cover:
- Hello World (basic print)
- Loops (for, while)
- Functions (definition and calls)
- Lists and operations
- Dictionaries and data structures
- Classes and object-oriented programming

Click any example to load it into the editor and run it!

Key Features

• Run Python 3.x code in browser
• No installation or signup required
• Instant code execution with output
• Syntax highlighting and code editor
• Multiple code examples to learn from
• Error messages and stack traces
• Execution time tracking
• Download code as .py file
• Clear and reset functionality
• Works offline after initial load
• 100% client-side - code never leaves your browser
• Dark mode support
• Mobile-friendly responsive design
• Powered by Pyodide (CPython in WebAssembly)