Contributing guidelines

build status code coverage CodeQL

Thanks for taking the time to contribute!

This project is simpler than most, so it’s a good place to start contributing to the open source community, even if you’re a newbie.

We are accepting these sorts of changes and requests:

We are not accepting things that should be done in your own wrapper code:

Reporting bugs and feature requests

We have different places to take issues by its category.

Bug Report

If you are reporting a bug or suspect a problem, please submit an issue with a detailed description of the problem + include steps to reproduce, code samples, and any reference materials.

:wrench: Report bugs

Feature Request

For new features, submit an issue with the enhancement label.

:bulb: Request features

Project management



# install core dependencies
pip install -r requirements.txt

# install test dependencies
pip install -r requirements-test.txt

# run all tests.
pytest -svr A tests

Performance benchmarking

Running the commands below in your console will show performance data. You can find the latest results here.

# install pytest and other dependencies.
pip install -r requirements-test.txt
pip install pytest-benchmark

# run benchmarks.
pytest benchmarks


This site uses GitHub Pages and Jekyll construction with Front Matter. The documentation site is in the docs folder. Build the site locally to test that it works properly. See GitHub Pages documentation for initial setup instructions.

bundle install
bundle exec jekyll serve

# then open site on

When adding or updating indicators:

Submitting changes

By submitting changes to this repo you are also acknowledging and agree to the terms in both the Developer Certificate of Origin (DCO) 1.1 and the Apache 2.0 license. These are standard open-source terms and conditions.

When ready, submit a Pull Request with a clear list of what you’ve done (read more about pull requests). Always write a clear log message for your commits. One-line messages are fine for most changes.

After a Pull Request is reviewed, accepted, and [squash] merged to main, we may batch changes before publishing a new package version to PyPI. Please be patient with turnaround time.

Code reviews and administration

If you want to contribute administratively, do code reviews, or provide general user support, we’re also currently seeking a few core people to help. Please contact us if interested.

Standards and design guidelines


We use the GitVersion tool for semantic versioning. It is mostly auto generated in the Azure DevOps build.

Type Format Description
Major x.-.- A significant deviation with major breaking changes.
Minor -.x.- A new feature, usually new non-breaking change, such as adding an indicator. Minor breaking changes may occur here and are denoted in the release notes.
Patch -.-.x A small bug fix, chore, or documentation change.
Increment -.-.-+x Intermediate commits between releases.

This only needs to be done on the merge to main when the Pull Request is committed, so your feature branch does not need to include this as it will get squashed anyway.

A Git tag, in accordance with the above schema, is introduced automatically after deploying to PyPI and is reflected in the Releases.



This repository uses a standard Apache 2.0 open-source license. It enables open-source community development by protecting the project and contributors from certain legal risks while allowing the widest range of uses, including in closed source software. Please review the license before using or contributing to the software.

Contact info

Start a new discussion, ask a question, or submit an issue if it is publicly relevant. You can also direct message @daveskender.

Thanks, Dave Skender