Python Formatter
Format and re-indent Python source code consistently, entirely in your browser.
Paste your Python code below - this tool normalizes indentation consistently.
Since Python's indentation is semantically significant, this tool preserves your code's structure while only normalizing consistent spacing.
What Does This Tool Do?
It normalizes indentation in Python source code to a consistent width, making code that mixes tabs and spaces (or inconsistent indent levels from copy-pasting) readable and consistent again.
Why Use This Tool?
Since Python uses indentation to define code blocks, inconsistent spacing isn't just an aesthetic issue - mixed tabs/spaces can cause actual IndentationErrors. This tool normalizes it safely.
How to Use It
- Paste your Python code.
- Click Format.
- Copy the consistently-indented result.
Limitations
This tool never executes your Python code - it only re-indents based on the existing block structure it detects; it cannot fix genuinely broken/ambiguous indentation where the original structure can't be determined.