Contributing

AnnData follows the development practices outlined in the Scanpy contribution guide.

Key Contributors

• Isaac Virshup: anndata >= 0.7, diverse contributions

• Sergei Rybakov: diverse contributions

• Alex Wolf: initial conception/development

• Philipp Angerer: initial conception/development, software quality

Release Notes

AnnData differs from scanpy (for now) in how its releases are done. It uses towncrier to build its changelog. We have set up some automation around this process. To run towncrier, create a PR into the base branch of the release with the compiled changelog, and backport to main if needed (i.e., the base branch is something like 0.10.x), run

hatch run towncrier:build X.Y.Z

You may add the option --dry-run at the end to do the local steps without pushing to Github, although the push will be mocked via gh pr --dry-run.

CI

GPU CI

To test GPU specific code we have a paid self-hosted runner to run the gpu specific tests on. This CI runs by default on the main branch, but for PRs requires the run-gpu-ci label to prevent unnecessary runs.