What is an online Python editor?

An online Python editor is a browser-based tool for writing and running Python without installing any software: syntax highlighting, autocomplete and the output of your code, in a web page.

How is this different from a simple code editor?

A simple code editor only lets you type text. pythoncompiler.io also runs your code, shows Matplotlib charts, keeps several files in tabs, underlines mistakes as you type, and loads libraries like NumPy and Pandas.

Yes. Your code is automatically saved to your browser's local storage every time you make a change. You can also download your files, export projects as ZIP archives, or generate a shareable URL to send your code to someone else.

What Python version does the editor use?

Python 3.13, with the same language features and standard library as a regular installation, including f-strings, the walrus operator, match statements and exception groups.

Online Python Editor: Write, Run & Share Python Code

A code editor that runs Python 3.13 in your browser, with nothing to install or configure.

Open the Editor

How It Works

Open pythoncompiler.io, type or paste your code and press Ctrl+Enter: the output appears in the panel below. There are no config files or virtual environments to set up.

The editor is built on CodeMirror 6, the engine behind the code editor in Chrome DevTools, with syntax highlighting, autocomplete and automatic indentation.

Use it to test a snippet, work through a Python tutorial, or draft a function for a larger project.

Editor Features

Syntax highlighting for Python 3.13
Autocomplete that knows your variables after a run
Mistakes underlined as you type
Auto-closing brackets and quotes
Imports between your open files
Dark and light themes

Shortcuts: Ctrl+Enter runs your code, Ctrl+Z and Ctrl+Y undo and redo, and Tab indents.

Beyond a Simple Editor

The editor sits inside a larger environment:

Multiple file tabs - keep scripts and notebooks open side by side
Full output panel - see print output, errors, and rendered charts in one place
Matplotlib charts - plots appear under your code
Error checking - mistakes are underlined as you type, before you run
Libraries - NumPy, Pandas and Matplotlib load when you import them

Code runs in your browser, so there is no server queue and no session timeout.

From Editor to Full IDE

When a project grows, the rest is in the same place: the notebook view runs code cell by cell with inline plots, the Packages panel installs more libraries, and the tutorials cover coding best practices. See everything the full IDE includes.

Frequently asked questions

What is an online Python editor?: An online Python editor is a browser-based tool for writing and running Python without installing any software: syntax highlighting, autocomplete and the output of your code, in a web page.
How is this different from a simple code editor?: A simple code editor only lets you type text. pythoncompiler.io also runs your code, shows Matplotlib charts, keeps several files in tabs, underlines mistakes as you type, and loads libraries like NumPy and Pandas, which makes it closer to a full IDE.
Can I save my code?: Yes. Your code is automatically saved to your browser's local storage every time you make a change. You can also download your files, export projects as ZIP archives, or generate a shareable URL to send your code to someone else.
What Python version does the editor use?: Python 3.13, with the same language features and standard library as a regular installation, including f-strings, the walrus operator, match statements and exception groups.

Try It Now

Open the editor and start writing Python. No signup and no download.

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Start Learning Python