We would love for you to contribute to this package and help make it even better than it is today! As a contributor, here are the guidelines we would like you to follow:

Got a question or found a bug?

If you have a question or find a bug in the source code, you can help us by submitting an issue to our GitHub Repository. Even better, you can submit a Pull Request with a fix.

Missing a Feature?

You can request a new feature by submitting an issue to our GitHub Repository. If you would like to implement a new feature, please submit an issue with a proposal for your work first, to be sure that we can use it. Then submit a Pull Request that points to this issue.

Please consider what kind of change it is:

  • For a Major Feature, first open an issue and outline your proposal so that it can be discussed. This will also allow us to better coordinate our efforts, prevent duplication of work, and help you to craft the change so that it is successfully accepted into the project.

  • Small Features can be crafted and directly submitted as a Pull Request.

Submission Guidelines

Submitting an Issue

Before you submit an issue, please search the issue tracker, maybe an issue for your problem already exists and the discussion might inform you of workarounds readily available.

We want to fix all the issues as soon as possible, but before fixing a bug we need to reproduce and confirm it. In order to reproduce bugs we will need as much information as possible, a Minimal Working Example, and preferably be in touch with you to gather information.

Submitting a Pull Request (PR)

When you wish to contribute to the code base, please consider the following guidelines:

  • Make a fork of this repository.

  • Make your changes in your fork, in a new git branch:

    git checkout -b my-fix-branch main
  • Create your patch, including appropriate test cases (please note that the coverage must always be equal to 100%).

  • Run the full test suite, and ensure that all tests pass (at least with one of the required python interpreters):



    tox -e py38 -e lint -e docs -e check-packaging
  • Commit your changes using a descriptive commit message.

    git commit -a

    Note: the optional commit -a command line option will automatically add and rm edited files.

  • Push your branch to GitHub:

    git push --set-upstream origin my-fix-branch
  • In GitHub, send a Pull Request to the main branch of the upstream repository of the relevant component.

  • If we suggest changes then:

    • Make the required updates.

    • Re-run the test suites to ensure tests are still passing.

    • Rebase your branch and force push to your GitHub repository (this will update your Pull Request):

      git rebase main -i
      git push -f

That’s it! Thank you for your contribution!

After your pull request is merged

After your pull request is merged, you can safely delete your branch and pull the changes from the main (upstream) repository:

  • Delete the remote branch on GitHub either through the GitHub web UI or your local shell as follows:

    git push origin --delete my-fix-branch
  • Check out the main branch:

    git checkout main
  • Delete the local branch:

    git branch -D my-fix-branch
  • Update your main with the latest upstream version:

    git pull --ff upstream main

Releasing a new version

Releasing a new version can only be done by the maintainers.

The release process is the following:

  • Checkout the main branch and ensure your local version is up to date:

    git checkout main
    git pull
  • Create a new branch locally:

    git checkout -b release_X.Y.Z
  • Update the CHANGELOG file using auto-changelog (see

    auto-changelog -v X.Y.Z
  • Commit and push the new changelog:

    git commit -m "Release X.Y.Z"
    git push --set-upstream origin release_X.Y.Z
  • Open a new pull request from this branch and merge it.

  • Create a new release on GitHub.

  • Checkout the main branch and update it:

    git checkout main
    git pull
  • Remove your local branch:

    git branch -D release_X.Y.Z

After these steps the CI should automatically build the wheel and push it to pypi.