Python Code Formatter

Python is an indentation-sensitive language — misaligned code doesn't just look wrong, it fails to run. A Python formatter applies PEP 8 conventions automatically: consistent indentation, spaces around operators, blank lines between functions and classes, and organized imports. This tool works entirely in your browser with no server upload.

Step 1: Paste Your Python Code

Copy your Python code — whether it's from a script, Jupyter notebook output, or a pasted snippet — and paste it into the input area on the left. The formatter handles functions, classes, decorators, imports, try/except blocks, list comprehensions, and docstrings.

Step 2: Choose Indentation

PEP 8 recommends 4 spaces (selected by default). You can also choose 2 spaces for more compact output or tabs if your project uses tab-based indentation. This setting normalizes all existing indentation to your chosen style.

Step 3: Format or Minify

Click Format Python to apply PEP 8 formatting with syntax highlighting. Click Minify to collapse the code by removing comments and excess whitespace — useful for code review diffs or size estimation. Note: Python requires indentation for blocks, so minification preserves the structural newlines.

Step 4: Copy or Download

Use Copy to place the formatted code on your clipboard, or Download to save it as a .py file. The output panel shows line count and character count for both input and output.

Python Formatting Best Practices

PEP 8 is the official Python style guide used by virtually all major Python projects. Key conventions: 4-space indentation, two blank lines before top-level function and class definitions, one blank line between methods inside a class, spaces around binary operators (x = 1 not x=1), and no space before a colon in slices or function definitions. Following PEP 8 makes code easier to read and contributes to successful code reviews.