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

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” is open to whoever wants to implement it.

Implement Features

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

Write Documentation

MT940 could always use more documentation, whether as part of the official MT940 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

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 mt940 for local development.

  1. Fork the mt940 repo on GitHub.

  2. Clone your fork locally:

    $ git clone --branch develop
  3. Install your local copy into a virtualenv. Assuming you have virtualenvwrapper installed, this is how you set up your fork for local development:

    $ mkvirtualenv mt940
    $ cd mt940/
    $ pip install -e .
  4. Create a branch for local development with git-flow-avh:

    $ git-flow feature start name-of-your-bugfix-or-feature

    Or without git-flow:

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

    Now you can make your changes locally.

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

    $ flake8 mt940 mt940_tests
    $ py.test
    $ tox

    To get flake8 and tox, just pip install them into your virtualenv using the requirements file.

    $ pip install -r mt940_tests/requirements.txt

  6. Commit your changes and push your branch to GitHub with git-flow-avh:

    $ git add .
    $ git commit -m "Your detailed description of your changes."
    $ git-flow feature publish

    Or without git-flow:

    $ git add . $ git commit -m “Your detailed description of your changes.” $ git push -u origin feature/name-of-your-bugfix-or-feature

  7. 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 Python 2.7, 3.4+, and for PyPy. Check and make sure that the tests pass for all supported Python versions. To test locally you can use tox which will run on all installed Python versions.


To run a subset of tests:

$ py.test mt940_tests/