Pep8ify is a library that modifies python source code to conform to pep8.
This library currently works with python 2.7, 3.2, and 3.3.
To install pep8ify, simply:
$ pip install pep8ify
To print a diff of changes that pep8ify will make against a particular source file or directory:
$ pep8ify source_folder
To have those changes written to the files:
$ pep8ify -w source_folder
By default, this will create backup files for each file that will be changed. You can add the -n option to not create the backups. Please do not do this if you are not using a version control system. Although this code is well-tested, there are most likely bugs still.
For more options about running particular fixers, read the lib2to3 documentation. This library is built on top of that one.
A list of the available fixers can be found with the following:
$ pep8ify -l Available transformations for the -f/--fix option: blank_lines compound_statements extraneous_whitespace imports_on_separate_lines indentation maximum_line_length missing_newline missing_whitespace tabs trailing_blank_lines trailing_whitespace whitespace_around_operator whitespace_before_inline_comment whitespace_before_parameters
All of these are set to run by default except for 'maximum_line_length'. To run all fixes including 'maximum_line_length', run:
$ pep8ify -f all -f maximum_line_length example.py