This document describes release procedures and infrastructure that is relevant for advanced contributors. See Contributing for information on regular contributions.

Release checklist

Not all aspects of ptychography are covered with automated unit tests. For that reason we should perform some manual tests before and after a release.

Tagging a version

Install dependencies from scripts/requirements.txt, which are used by scripts/release. Then call the script with the bump command, with the new version as parameter:

$ ./scripts/release bump v0.3.0.rc0 --tag

If you are bumping to a .dev0 suffix, omit --tag and only pass --commit:

$ ./scripts/release bump v0.4.0.dev0 --commit


In normal development, the version in the master branch will be x.y.z.dev0, if the next expected version is x.y.z. When starting the release process, it will be bumped up to x.y.zrc0 (note: no dot before rc!) and possibly additional release candidates afterwards (rc1, …, rcN). These release candidates are done mostly to assure our release scripts work as expected and for doing additional QA. See below for our QA process.

Before (using a release candidate package)

  • Review open issues and pull requests

  • Handle deprecation, search the code base for DeprecationWarning that are supposed to be removed in that release.

  • Full documentation review and update, including link check using sphinx-build -b linkcheck "docs/source" "docs/build/html"

  • Run complete test suite, including slow tests that are deactivated by default and tests that require sample files. Also run tests that require a GPU.

  • Update the expected version in notes on changes, i.e. from 0.3.0.dev0 to 0.3.0 when releasing version 0.3.0.

  • Update and review change log in docs/source/changelog.rst, merging snippets in docs/source/changelog/*/ as appropriate.

  • Update the JSON files in the packaging/ folder with author and project information

  • Create a release candidate using scripts/release. See scripts/release --help for details.

  • Confirm that wheel and tar.gz are built for the release candidate on GitHub

  • Confirm that a new version with the most recent release candidate is created in the sandbox that is ready for submission.

  • Install release candidate packages in a clean environment (for example: python -m pip install -i --extra-index-url 'ptychography40==0.1.0rc0')

  • Make sure you have test files for all supported algorithms available

  • Run all examples and applications using the test files
    • Are parameters recognized correctly, as far as implemented?

    • Any bad default values?

    • Does the file open correctly?

    • Does the result change when the input parameters are changed?

    • All display channels present and looking reasonable?

    • Reasonable performance?

  • Run all examples and applications on Windows

  • Confirm that pull requests and issues are handled as intended, i.e. milestoned and merged in appropriate branch.

After releasing on GitHub

  • Confirm that all release packages are built and release notes are up-to-date

  • Install release package

  • Confirm correct version info

  • confirm package upload to PyPI

  • Publish new version on

  • Update documentation with new links, if necessary
    • Add zenodo badge for the new release to Changelog page

  • Send announcement message on mailing list

  • Bump version in master branch to next .dev0