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PyDev Formatter


This package provides a command line API to use the PyDev Code Formatter (the PyDev Code formatter is created by extracting the engine for code formatting provided by PyDev:

The PyDev Formatter is a conservative python code formatter and will try to keep the structure of the code as close as possible to the original sources, while fixing many common issues such as:

  • Keep a space after commas
  • Trim spaces inside parenthesis
  • Right-trim lines
  • Add a space before and after operators
  • Keep 2 lines before top level classes/methods
  • Keep 1 line before inner classes/methods
  • Add new line at end of file
  • Format comments to have 2 spaces before a comment and 1 space inside the comment

Note that it does not try to break statements to fit any pre-specified line length (as gofmt).

Command line

Basic use of the formatter is:

python -m pydevf <filename_or_directory>

python -m pydevf -h may be used to see the help for additional parameters.



  • java 8+ (so, make sure java is installed and in your PATH)
  • python 2.7 or 3.4 onwards
  • click 6+

Install with pip

To install the PyDev Formatter use:

pip install pydevf

Using with pre-commit

To use it with pre-commit, just add the following repo to your .pre-commit-config.yaml:

-   repo:
    rev: ''  # Use the sha or tag you want to point at
    -   id: pydevf

Dealing with big lines

Note that in PyDev there are tools to help on those manual cases. i.e.:

Wrap docstrings/comments with Ctrl+2, W -- See:

Wrap/unwrap lists/calls with Ctrl+1, Wrap expression/Unwrap expression (used with cursor inside the list/call).

Daemon mode

By default the formatter will create a daemon and will reuse it among multiple invocations (because the formatter is very fast but its startup is slow). If you don't want to use this mode use the --no-daemon parameter.


  • EPL (Eclipse Public License) 2.0


  • Update versions on and
  • git tag {{version}} (i.e.: v0.1.2)
  • git push --tags (travis should build and deploy)

Local release

  • Update versions on and
  • python sdist bdist_wheel
  • python -m twine upload dist/*