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Python Formatter

Format and beautify Python code with proper PEP 8-style indentation. Cleans up spacing around operators, normalises indentation, and structures your code for readability.

📥 Input

📤 Output

Ready — paste code and click Format · Ctrl+Enter to format

Lines: — Size: —

Load example: ▶ Function ▶ Class

📊 Stats

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Lines

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Size

💡 Quick Reference

PEP 8Python style guide

4 spacesStandard indent

2 linesBetween top-level

1 lineBetween methods

SpacesAround operators

🔗 Related Tools

What is PEP 8?

PEP 8 is the official Python style guide published by the Python Software Foundation. It defines conventions for indentation (4 spaces), line length (79 characters), blank lines between functions and classes, spacing around operators, and naming conventions. Following PEP 8 makes Python code more readable and consistent across teams and projects.

Frequently Asked Questions

Python uses mandatory indentation to define code blocks, removing the need for curly braces or begin/end keywords. This was a deliberate design choice by Guido van Rossum to enforce readable code structure. Inconsistent indentation is a syntax error in Python — unlike most other languages where it's just a style issue.

PEP 8 mandates 4 spaces per indentation level for Python. While 2 spaces are common in other languages (like Ruby), Python's official style guide and most Python projects use 4 spaces. Google's Python style guide also uses 4 spaces. Tabs are allowed by the interpreter but mixing tabs and spaces is a syntax error in Python 3.

No. This formatter only adjusts whitespace and indentation — it never changes the logic, variable names, or structure of your code. It's safe to format and copy back to your project.

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Frequently Asked Questions

Is this Python Formatter free to use? +

Yes, completely free. No signup, no account, no payment required. Just paste your input and use it directly in your browser.

Does this tool store or send my data anywhere? +

No. Everything runs entirely in your browser using JavaScript. Your data never leaves your device or gets sent to any server.

What browsers does this tool support? +

It works in all modern browsers — Chrome, Firefox, Safari, Edge, and Opera — on both desktop and mobile.

Can I use this tool offline? +

Once the page is loaded, the tool runs locally in your browser without needing an active internet connection for most operations.

Python Formatter

What is PEP 8?

Frequently Asked Questions

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Need something built, not just formatted?

Frequently Asked Questions

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