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Python linter, formatter, and modernizer to make your code positively perfect!

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Input
Output

Linting & Analysis

Improve AI Python code
AI-generated code is everywhere. According to TechCrunch, around 30% of new code at Google and Microsoft is software-generated.
An increase in code can have downsides, though, like more time spent reviewing code.
With Pyrfecter, you can easily paste AI-generated Python code to beautify and improve it before adding it to your application.
How Pyrfecter can improve your AI-generated code
You don't have to take our word for it, though. Check out what major AI models have to say about Pyrfecter's ability to improve Python code from Large Language Models (LLMs).
From ChatGPT (GPT‑4.1 mini):
ChatGPT logo
Pyrfecter.com can enhance Python code generated by ChatGPT by automatically analyzing, refactoring, and formatting it according to best practices and style guides like PEP8. It identifies inefficiencies, redundancies, and potential bugs, providing cleaner, more readable, and more maintainable code. This is especially useful for polishing AI-generated code, which may be functional but not optimized or idiomatic.
From Gemini (2.5 Flash):
Google Gemini logo
Pyrfecter.com can significantly improve the Python code Gemini outputs by automatically applying industry-standard formatting with Black and isort for consistent style and organized imports, catching potential errors and style issues with linters like Pyflakes and Ruff, and modernizing code by converting to f-strings and using the walrus operator, all within the browser for privacy.
From Perplexity (version running June 24th, 2025):
Perplexity logo
Pyrfecter.com can significantly enhance Python code generated by perplexity.ai by serving as an in-browser linter, formatter, and code improver that automatically detects and corrects syntax errors, enforces consistent formatting using tools like Black, and sorts imports with isort—all without altering the code’s functionality. By pasting code from perplexity.ai into Pyrfecter, users benefit from immediate feedback on code quality issues, improved readability, and adherence to Python best practices, making the code cleaner, more maintainable, and less prone to subtle bugs.
From Claude (4.5 Sonnet):
Claude logo
Pyrfecter.com can significantly improve Python code output from Claude.ai by providing a comprehensive online tool that lints, formats, and modernizes Python code directly in your browser without your code leaving the browser environment