Changes for the upcoming release can be found in the "changelog.d" directory in our repository.

This section covers the changes between major version 2 and version 3.

• :gh:`459`: Fix 3.0.3:
  • :pr:`457`: Re-enable Trove license identifier
  • :pr:`456`: Fix source dist file

• :pr:`453`: The check in _comparator does not match the check in :meth:`Version.compare`. This breaks comparision with subclasses.

• :pr:`435`: Several small improvements for documentation:
  • Add meta description to improve SEO
  • Use canonicals on ReadTheDocs (commit 87f639f)
  • Pin versions for reproducable doc builds (commit 03fb990)
  • Add missing :file:`.readthedocs.yaml` file (commit ec9348a)
  • Correct some smaller issues when building (commit f65feab)
• :pr:`436`: Move search box more at the top. This makes it easier for users as if the TOC is long, the search box isn't visible anymore.

• :pr:`439`: Improve type hints to fix TODOs

• :pr:`440`: Update workflow file
• :pr:`446`: Add Python 3.13 to GitHub Actions
• :pr:`447`: Modernize project configs with :file:`pyproject.toml` and use Astral's uv command.
  • In :file:`pyproject.toml`:
    • Move all project related data from :file:`setup.cfg` to :file:`pyproject.toml`
    • Use new dependency group from PEP 735
    • Consolidate flake8, isort, pycodestyle with ruff
    • Split towncrier config type "trivial" into "trivial" and "internal"
  • Create config file for ruff (:file:`.ruff.toml`)
  • Create config file for pytest (:file:`.pytest.ini`)
  • Simplify :file:`tox.ini` and remove old stuff
  • Document installation with new :command:`uv` command
  • Simplify Sphinx config with :func:`find_version()`
  • Update the authors
  • Use :command:`uv` in GitHub Action :file:`python-testing.yml` workflow
• Update :file:`release-procedure.md`.
• :pr:`451`: Turn our Markdown issue templates into YAML

• :pr:`438`: Replace organization placeholder in license
• :pr:`445`: Improve private :func:`_nat_cmp` method:
  • Remove obsolete else.
  • Find a better way to identify digits without the :mod:`re` module.
  • Fix docstring in :meth:`Version.compare`

• :pr:`418`: Replace :class:`~collection.OrderedDict` with :class:`dict`.

  The dict datatype is ordered since Python 3.7. As we do not support Python 3.6 anymore, it can be considered safe to avoid :class:`~collection.OrderedDict`. Related to :gh:`419`.

• :pr:`426`: Fix :meth:`~semver.version.Version.replace` method to use the derived class of an instance instead of :class:`~semver.version.Version` class.

• :pr:`431`: Clarify version policy for the different semver versions (v2, v3, >v3) and the supported Python versions.
• :gh:`432`: Improve external doc links to Python and Pydantic.

• :pr:`417`: Amend GitHub Actions to check against MacOS.

• :pr:`420`: Introduce :py:class:`~typing.ClassVar` for some :class:`~semver.version.Version` class variables, mainly :data:`~semver.version.Version.NAMES` and some private.
• :pr:`421`: Insert mypy configuration into :file:`pyproject.toml` and remove config options from :file:`tox.ini`.

• :gh:`410`: Export functions properly using __all__ in __init__.py.

• :gh:`291`: Disallow negative numbers in VersionInfo arguments for major, minor, and patch.
• :gh:`310`: Rework API documentation. Follow a more "semi-manual" attempt and add auto directives into :file:`docs/api.rst`.
• :gh:`344`: Allow empty string, a string with a prefix, or None as token in :meth:`~semver.version.Version.bump_build` and :meth:`~semver.version.Version.bump_prerelease`.
• :gh:`374`: Correct Towncrier's config entries in the :file:`pyproject.toml` file. The old entries [[tool.towncrier.type]] are deprecated and need to be replaced by [tool.towncrier.fragment.<TYPE>].
• :pr:`384`: General cleanup, reformat files:
  • Reformat source code with black again as some config options did accidentely exclude the semver source code. Mostly remove some includes/excludes in the black config.
  • Integrate concurrency in GH Action
  • Ignore Python files on project dirs in .gitignore
  • Remove unused patterns in MANIFEST.in
  • Use extend-exclude for flake in :file:`setup.cfg`` and adapt list.
  • Use skip_install=True in :file:`tox.ini` for black
• :pr:`393`: Fix command :command:`python -m semver` to avoid the error "invalid choice"
• :pr:`396`: Calling :meth:`~semver.version.Version.parse` on a derived class will show correct type of derived class.

• :gh:`169`: Deprecate CLI functions not imported from semver.cli.

• :gh:`234`: In :file:`setup.py` simplified file and remove Tox and Clean classes

• :gh:`284`: Deprecate the use of :meth:`~Version.isvalid`.

  Rename :meth:`~semver.version.Version.isvalid` to :meth:`~semver.version.Version.is_valid` for consistency reasons with :meth:`~semver.version.Version.is_compatible`.

• :pr:`290`: For semver 3.0.0-alpha0 deprecated:

  • Remove anything related to Python2
  • In :file:`tox.ini` and :file:`.travis.yml` Remove targets py27, py34, py35, and pypy. Add py38, py39, and nightly (allow to fail)
  • In :file:`setup.py` simplified file and remove Tox and Clean classes
  • Remove old Python versions (2.7, 3.4, 3.5, and pypy) from Travis

• :gh:`372`: Deprecate support for Python 3.6.

  Python 3.6 reached its end of life and isn't supported anymore. At the time of writing (Dec 2022), the lowest version is 3.7.

  Although the poll didn't cast many votes, the majority agreed to remove support for Python 3.6.

• :pr:`402`: Keep :func:`semver.compare <semver._deprecated.compare>`.

  Although it breaks consistency with module level functions, it seems it's a much needed/used function. It's still unclear if we should deprecate this function or not (that's why we use :py:exc:`PendingDeprecationWarning`).

  As we don't have a uniform initializer yet, this function stays in the :file:`_deprecated.py` file for the time being until we find a better solution. See :gh:`258` for details.

• :gh:`169`: Create semver package and split code among different modules in the packages:
  • Remove :file:`semver.py`
  • Create :file:`src/semver/__init__.py`
  • Create :file:`src/semver/cli.py` for all CLI methods
  • Create :file:`src/semver/_deprecated.py` for the deprecated decorator and other deprecated functions
  • Create :file:`src/semver/__main__.py` to allow calling the CLI using :command:`python -m semver`
  • Create :file:`src/semver/_types.py` to hold type aliases
  • Create :file:`src/semver/version.py` to hold the :class:`Version` class (old name :class:`VersionInfo`) and its utility functions
  • Create :file:`src/semver/__about__.py` for all the metadata variables
• :gh:`213`: Add typing information
• :gh:`284`: Implement :meth:`~semver.version.Version.is_compatible` to make "is self compatible with X".
• :gh:`305`: Rename :class:`~semver.version.VersionInfo` to :class:`~semver.version.Version` but keep an alias for compatibility
• :pr:`359`: Add optional parameter optional_minor_and_patch in :meth:`~semver.version.Version.parse` to allow optional minor and patch parts.
• :pr:`362`: Make :meth:`~semver.version.Version.match` accept a bare version string as match expression, defaulting to equality testing.
• :gh:`364`: Enhance :file:`pyproject.toml` to make it possible to use the :command:`pyproject-build` command from the build module. For more information, see :ref:`build-semver`.
• :gh:`365`: Improve :file:`pyproject.toml`.
  • Use setuptools, add metadata. Taken approach from A Practical Guide to Setuptools and Pyproject.toml.
  • Doc: Describe building of semver
  • Remove :file:`.travis.yml` in :file:`MANIFEST.in` (not needed anymore)
  • Distinguish between Python 3.6 and others in :file:`tox.ini`
  • Add skip_missing_interpreters option for :file:`tox.ini`
  • GH Action: Upgrade setuptools and setuptools-scm and test against 3.11.0-rc.2

• :gh:`276`: Document how to create a sublass from :class:`~semver.version.VersionInfo` class
• :gh:`284`: Document deprecation of :meth:`~semver.version.Version.isvalid`.
• :pr:`290`: Several improvements in the documentation:
  • New layout to distinguish from the semver2 development line.
  • Create new logo.
  • Remove any occurances of Python2.
  • Describe changelog process with Towncrier.
  • Update the release process.
• :gh:`304`: Several improvements in documentation:
  • Reorganize API documentation.
  • Add migration chapter from semver2 to semver3.
  • Distinguish between changlog for version 2 and 3
• :gh:`305`: Add note about :class:`~semver.version.Version` rename.
• :gh:`312`: Rework "Usage" section.
  • Mention the rename of :class:`~semver.version.VersionInfo` to :class:`~semver.version.Version` class
  • Remove semver. prefix in doctests to make examples shorter
  • Correct some references to dunder methods like :func:`~semver.version.Version.__getitem__`, :func:`~semver.version.Version.__gt__` etc.
  • Remove inconsistencies and mention module level function as deprecated and discouraged from using
  • Make empty :py:func:`super` call in :file:`semverwithvprefix.py` example
• :gh:`315`: Improve release procedure text
• :gh:`335`: Add new section "Converting versions between PyPI and semver" the limitations and possible use cases to convert from one into the other versioning scheme.
• :gh:`340`: Describe how to get version from a file
• :gh:`343`: Describe combining Pydantic with semver in the "Advanced topic" section.
• :gh:`350`: Restructure usage section. Create subdirectory "usage/" and splitted all section into different files.
• :gh:`351`: Introduce new topics for:
  • "Migration to semver3"
  • "Advanced topics"
• :pr:`392`: Fix the example in the documentation for combining semver and pydantic.

• :gh:`169`: Adapted infrastructure code to the new project layout.

  • Replace :file:`setup.py` with :file:`setup.cfg` because the :file:`setup.cfg` is easier to use
  • Adapt documentation code snippets where needed
  • Adapt tests
  • Changed the deprecated to hardcode the semver package name in the warning.

  Increase coverage to 100% for all non-deprecated APIs

• :pr:`290`: Add supported Python versions to :command:`black`.

• :gh:`304`: Support PEP-561 :file:`py.typed`.

  According to the mentioned PEP:

  "Package maintainers who wish to support type checking of their code MUST add a marker file named :file:`py.typed` to their package supporting typing."

  Add package_data to :file:`setup.cfg` to include this marker in dist and whl file.

• :gh:`309`: Some (private) functions from the :mod:`semver.version` module has been changed.

  The following functions got renamed:

  • function :func:`semver.version.comparator` got renamed to :func:`semver.version._comparator` as it is only useful inside the :class:`~semver.version.Version` class.
  • function :func:`semver.version.cmp` got renamed to :func:`semver.version._cmp` as it is only useful inside the :class:`~semver.version.Version` class.

  The following functions got integrated into the :class:`~semver.version.Version` class:

  • function :func:`semver.version._nat_cmd` as a classmethod
  • function :func:`semver.version.ensure_str`

• :gh:`313`: Correct :file:`tox.ini` for changelog entry to skip installation for semver. This should speed up the execution of towncrier.

• :gh:`316`: Comparisons of :class:`~semver.version.Version` class and other types return now a :py:const:`NotImplemented` constant instead of a :py:exc:`TypeError` exception.

  The NotImplemented section of the Python documentation recommends returning this constant when comparing with __gt__, __lt__, and other comparison operators to "to indicate that the operation is not implemented with respect to the other type".

• :gh:`319`: Introduce stages in :file:`.travis.yml` The config file contains now two stages: check and test. If check fails, the test stage won't be executed. This could speed up things when some checks fails.

• :gh:`322`: Switch from Travis CI to GitHub Actions.

• :gh:`347`: Support Python 3.10 in GitHub Action and other config files.

• :gh:`378`: Fix some typos in Towncrier configuration

• :gh:`388`: For pytest, switch to the more modern :mod:`importlib` approach as it doesn't require to modify :data:`sys.path`: https://docs.pytest.org/en/7.2.x/explanation/pythonpath.html

• :pr:`389`: Add public class variable :data:`Version.NAMES <semver.version.Version.NAMES>`.

  This class variable contains a tuple of strings that contains the names of all attributes of a Version (like "major", "minor" etc).

  In cases we need to have dynamical values, this makes it easier to iterate.