Contributing#

Contributions are welcome, and they are greatly appreciated! Every little bit helps, and credit will always be given.

You can contribute in many ways:

Types of Contributions#

Report Bugs#

Report bugs at https://github.com/python-attrs/cattrs/issues.

If you are reporting a bug, please include:

  • Your operating system name and version.

  • Any details about your local setup that might be helpful in troubleshooting.

  • Detailed steps to reproduce the bug.

Fix Bugs#

Look through the GitHub issues for bugs. Anything tagged with “bug” and “help wanted” is open to whoever wants to implement it.

Implement Features#

Look through the GitHub issues for features. Anything tagged with “enhancement” and “help wanted” is open to whoever wants to implement it.

Write Documentation#

cattrs could always use more documentation, whether as part of the official cattrs docs, in docstrings, or even on the web in blog posts, articles, and such.

Submit Feedback#

The best way to send feedback is to file an issue at https://github.com/python-attrs/cattrs/issues.

If you are proposing a feature:

  • Explain in detail how it would work.

  • Keep the scope as narrow as possible, to make it easier to implement.

  • Remember that this is a volunteer-driven project, and that contributions are welcome :)

Get Started!#

Ready to contribute? Here’s how to set up cattrs for local development.

  1. Fork the cattrs repo on GitHub.

  2. Clone your fork locally::

$ git clone git@github.com:your_name_here/cattrs.git
  1. Install your local copy into a virtualenv. Assuming you have poetry installed, this is how you set up your fork for local development::

$ cd cattrs/
$ poetry install
  1. Create a branch for local development::

$ git checkout -b name-of-your-bugfix-or-feature

Now you can make your changes locally.

  1. When you’re done making changes, check that your changes pass flake8 and the tests, including testing other Python versions with tox::

$ poetry shell
$ make lint
$ make test
$ tox
  1. Commit your changes and push your branch to GitHub::

$ git add .
$ git commit -m "Your detailed description of your changes."
$ git push origin name-of-your-bugfix-or-feature
  1. Submit a pull request through the GitHub website.

Pull Request Guidelines#

Before you submit a pull request, check that it meets these guidelines:

  1. The pull request should include tests.

  2. If the pull request adds functionality, the docs should be updated. Put your new functionality into a function with a docstring, and add the feature to the list in README.rst.

  3. The pull request should work for all supported Python versions. Check https://github.com/python-attrs/cattrs/actions and make sure that the tests pass for all supported Python versions.

Tips#

To run a subset of tests:

$ pytest tests.test_unstructure