frettipy

No fretting about pretty Python.

• Prefer single over double quotation mark
• Do not omit zero before or after decimal point
• Spaces around binary operator
• No space after unary operator
• Spaces around comparison operator
• No spaces around argument-assignment operator
• No space on inner side of bracket
• No explicit line joining in brackets
• Slices: no spaces around slice operator
• Dictionaries: space after colon (but not before)
• Same indentation of lines with opening and closing bracket
• Spaces around assignment operator
• Block initiation: no space before colon
• Space after comma (but not before)
• No double spaces
• Single space between non-whitespace character and comment
• No space before opening bracket (except after keyword)
• Indentation with four spaces instead of tabs
• No trailing whitespace
• No double blank lines (except before class or function)
• No blank line at end of file
• No blank line at beginning of file
• Newline character at end of last line

Synopsis

This script formats Python source code following the above style conventions.

frettipy [-f] FILE

If -f is present, FILE is modified in place! Keep a copy or use version control. Otherwise the intended modifications are shown without changing FILE.

If FILE is a directory, all .py and .Rmd files in the tree are processed!

Installation

Either from PyPI:

python3 -m pip install frettipy

Or from GitHub:

python3 -m pip install git+https://github.com/janberges/frettipy