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

You can contribute in many ways:

Report bugs at https://github.com/openfoodfacts/robotoff/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.

Look through the GitHub issues for bugs. Anything tagged with "bug" and "help wanted" is open to whoever wants to implement it. Issues tagged with "good first issue" are suitable for newcomers.

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

Robotoff could always use more documentation, whether as part of the official Robotoff docs, in docstrings, or in the Wiki.

The best way to send feedback is to file an issue at https://github.com/openfoodfacts/robotoff/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

Ready to contribute? Here's how to set up Robotoff for local development.

1. Fork the robotoff repo on GitHub.

2. Clone your fork locally:

   $ git clone git@github.com:your_name_here/robotoff.git
   

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 robotoff
   $ cd robotoff/
   $ pip install -r requirements.txt
   

4. Launch the PostgreSQL database using docker-compose:

   $ docker-compose up -d postgres
   

5. Create a branch for local development:

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

   Now you can make your changes locally.

6. When you're done making changes, check that your changes pass flake8, mypy and the tests. In addition, ensure that your code is formatted using black:

   $ flake8
   $ black .
   $ mypy .
   $ python3 -m pytest tests
   

   To get flake8, black, and tox, just pip install them into your virtualenv. If you wish, you can add pre-commit hooks for both flake8 and black to make all formatting easier.

7. 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
   

   In brief, commit messages should follow these conventions:

   • Always contain a subject line which briefly describes the changes made. For example "Update CONTRIBUTING.rst".
   • Subject lines should not exceed 50 characters.
   • The commit body should contain context about the change - how the code worked before, how it works now and why you decided to solve the issue in the way you did.

   More detail on commit guidelines can be found at https://chris.beams.io/posts/git-commit

8. Submit a pull request through the GitHub website.

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.
3. The pull request should work for Python 3.5 and above. Check https://travis-ci.org/github/openfoodfacts/robotoff/pull_requests and make sure that the tests pass for all supported Python versions.

This contributing page was adapted from Pyswarms documentation.