Online Python Formatter

Online Python Formatter

The online Python formatter organizes Python indentation based on structural keywords such as def, class, if, for, while, and try. It supports consistent indentation widths and can detect lines that mix Tabs and spaces. Because indentation is part of Python syntax, the formatted result should always be reviewed manually.

Python Indentation Formatting

The tool recalculates indentation according to common Python block structures. Keywords such as def, class, if, for, while, and with open new indentation levels, while return, raise, break, continue, pass, elif, else, except, and finally are aligned with their appropriate parent blocks. You can choose 2-space, 4-space, or 8-space indentation.

Indentation Consistency Check

The tool detects lines that mix Tabs and spaces and reports their line numbers. Python is indentation-sensitive, and inconsistent indentation can cause parsing errors.

Common Use Cases

• Clean up Python indentation copied from chat messages or web pages.
• Standardize Python indentation width, such as using four spaces.
• Identify mixed Tab and space indentation that may cause IndentationError.

Important Notes

This tool provides structural indentation formatting rather than a complete Python formatter. It does not rewrite expression line breaks or general spacing style. Review the resulting logical indentation manually and use the Python interpreter for final verification when necessary.

Privacy and Data Security

All processing is performed locally in the browser. Your Python code is not uploaded to the server.