feat: 2026 modernize

.dockerignore

@@ -0,0 +1,9 @@
+.git
+.github
+.mypy_cache
+.pytest_cache
+.ruff_cache
+.venv
+__pycache__
+build
+dist

.github/workflows/ci.yaml

@@ -0,0 +1,50 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up uv
+        uses: astral-sh/setup-uv@v6
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install dependencies
+        run: uv sync --group dev
+
+      - name: Run tests
+        run: uv run pytest
+
+      - name: Lint
+        run: uv run ruff check .
+
+      - name: Type-check
+        run: uv run mypy
+
+      - name: Build distribution artifacts
+        run: uv build
+
+      - name: Validate built package
+        run: uv run twine check dist/*
+
+      - name: Verify install from wheel
+        run: |
+          uv venv .venv-install
+          uv pip install --python .venv-install/bin/python dist/*.whl
+          .venv-install/bin/python -c "from datemath import datemath; print(datemath('now-1d'))"
+          .venv-install/bin/python -c "import datemath; print(datemath.__version__)"

.github/workflows/release.yaml

@@ -1,20 +1,29 @@
 name: Release Packages
+
 on:
   release:
-    types: 
-      - released
+    types:
+      - published
+
 jobs:
-  release-to-pypi:
-    runs-on: ubuntu-20.04
+  publish:
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+
     steps:
-      - uses: actions/checkout@v2
-      - name: install requirements for python3
-        run: pip3 install -r requirements.txt
-      - name: package and upload python3
-        env:
-          TWINE_USERNAME: __token__
-          TWINE_PASSWORD: ${{ secrets.PYPI_API_TOKEN }}
-          PYTHON_DATEMATH_VERSION: ${{ github.event.release.tag_name }}
-        run: |
-          python3 setup.py sdist bdist_wheel
-          twine upload dist/*
+      - uses: actions/checkout@v4
+
+      - name: Set up uv
+        uses: astral-sh/setup-uv@v6
+        with:
+          python-version: "3.14"
+
+      - name: Build artifacts
+        run: uv build
+
+      - name: Validate distribution metadata
+        run: uv run --with twine twine check dist/*
+
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1

.github/workflows/semantic-release.yaml

@@ -0,0 +1,31 @@
+name: Semantic Release
+
+on:
+  push:
+    branches:
+      - master
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up uv
+        uses: astral-sh/setup-uv@v6
+        with:
+          python-version: "3.14"
+
+      - name: Install development dependencies
+        run: uv sync --group dev
+
+      - name: Create release
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: uv run semantic-release -c .releaserc.toml version

.gitignore

@@ -15,4 +15,3 @@ __pycache__/
 # due to using tox and pytest
 .tox
 .cache
-

.pre-commit-config.yaml

@@ -0,0 +1,32 @@
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.2.0
+    hooks:
+      - id: check-merge-conflict
+      - id: check-toml
+      - id: check-yaml
+      - id: end-of-file-fixer
+      - id: trailing-whitespace
+
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.14.5
+    hooks:
+      - id: ruff-check
+        args: [--fix]
+      - id: ruff-format
+
+  - repo: local
+    hooks:
+      - id: mypy
+        name: mypy
+        entry: uv run mypy
+        language: system
+        pass_filenames: false
+        stages: [pre-push]
+
+      - id: pytest
+        name: pytest
+        entry: uv run pytest
+        language: system
+        pass_filenames: false
+        stages: [pre-push]

.releaserc.toml

@@ -0,0 +1,40 @@
+[semantic_release]
+version_variables = ["datemath/_version.py:__version__"]
+commit_message = "chore(release): {version} [skip ci]"
+commit_parser = "conventional"
+major_on_zero = false
+tag_format = "v{version}"
+
+[semantic_release.branches.main]
+match = "(main|master)"
+prerelease = false
+prerelease_token = "rc"
+
+[semantic_release.changelog]
+mode = "update"
+
+[semantic_release.changelog.default_templates]
+changelog_file = "CHANGELOG.md"
+output_format = "md"
+mask_initial_release = false
+
+[semantic_release.commit_author]
+env = "GIT_COMMIT_AUTHOR"
+default = "github-actions <actions@github.com>"
+
+[semantic_release.commit_parser_options]
+minor_tags = ["feat"]
+patch_tags = ["fix", "perf"]
+other_allowed_tags = ["build", "chore", "ci", "docs", "refactor", "style", "test"]
+allowed_tags = ["feat", "fix", "perf", "build", "chore", "ci", "docs", "refactor", "style", "test"]
+default_bump_level = 0
+parse_squash_commits = true
+ignore_merge_commits = true
+
+[semantic_release.remote]
+name = "origin"
+type = "github"
+
+[semantic_release.publish]
+dist_glob_patterns = ["dist/*"]
+upload_to_vcs_release = true

CHANGELOG.md

@@ -5,6 +5,19 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+### changed
+- Modernized packaging and developer workflow around `pyproject.toml`, `uv`, `pytest`, `ruff`, and `mypy`
+- Updated CI and release automation to use the new build and verification flow
+- Replaced the legacy single-file `unittest` suite with a `pytest` test layout while preserving the existing behavior coverage
+- Updated the Docker image to a current Python base image and removed the old `requirements.txt` and `setup.py` install path
+
+### compatibility
+- Support remains Python `3.10+`
+- During the modernization pass, the floor was briefly evaluated at `3.11+`, but it was set to `3.10+` instead because the library and tooling still work cleanly there and it keeps a broader install base without adding meaningful maintenance overhead
+- Previous published support before this change was Python `3.8+`; this update intentionally drops `3.8` and `3.9` to align the project with a more current 2026 baseline while keeping `3.10` available
+- `zoneinfo` is now used in tests instead of `pytz`, but this does not require raising the runtime floor beyond Python `3.10`
+
 ## [3.0.3] - 2024-09-12
 Please use 3.0.3 going forward!   3.0.2 has a breaking bug.
 
@@ -16,7 +29,7 @@ Please use 3.0.3 going forward!   3.0.2 has a breaking bug.
 ## [3.0.2] - 2024-09-11
 ### added
 - Feat: Complete typing with strict type-checking [#43](https://github.com/nickmaccarthy/python-datemath/pull/43) Thank you @Avasam!
-- Feat: Added `__version__` to verify the version of the module.  
+- Feat: Added `__version__` to verify the version of the module.
 - Feat: Added Dockerfile and relevant verify.py to help with local development and testing
 
 ### chore
@@ -31,15 +44,15 @@ Please use 3.0.3 going forward!   3.0.2 has a breaking bug.
 - Fix: move more pypi configurations to setup.cfg and out of setup.py
 
 
-## [3.0.1] - 2024-08-23 
+## [3.0.1] - 2024-08-23
 ### fixed
 - Fix: Race condition in timezone tests: https://github.com/nickmaccarthy/python-datemath/issues/36
 - Fix: Updated arrow version: https://github.com/nickmaccarthy/python-datemath/issues/32
-- Fix: mypy type hint checking in tests: https://github.com/nickmaccarthy/python-datemath/issues/31 
+- Fix: mypy type hint checking in tests: https://github.com/nickmaccarthy/python-datemath/issues/31
 - Fix: SyntaxWarning: invalid escape sequence in `re.match()`: https://github.com/nickmaccarthy/python-datemath/pull/39
 - Fix: Licence Classifier: https://github.com/nickmaccarthy/python-datemath/pull/34
 - Fix: Bump certifi to latest: https://github.com/nickmaccarthy/python-datemath/pull/38
-### added 
+### added
 - Feat: Typehint support: https://github.com/nickmaccarthy/python-datemath/issues/31
 - Feat: Renamed CHANGELOG.md to keepachangelog.org format
 
@@ -50,13 +63,13 @@ Please use 3.0.3 going forward!   3.0.2 has a breaking bug.
 - python 2.7 support. Python 3.8+ will only be supported going forward
 
 ## [1.5.5] - 2021-04-26
-### fixed 
+### fixed
 - fix: [Issue #28](https://github.com/nickmaccarthy/python-datemath/issues/28)
     * `datemath()` object now returns the expected `datetime` object instead of an `Arrow` object
     * added tests to catch invalid object types of helpers
 
 ## [1.5.4] - 2021-04-20
-### Unused 
+### Unused
 - skipped due to name conflict on pypi, all changes in this are from `1.5.3`
 
 ## [1.5.3] - 2021-04-16
@@ -72,7 +85,7 @@ Please use 3.0.3 going forward!   3.0.2 has a breaking bug.
 ### fixed
 - FIX: [Issue #15](https://github.com/nickmaccarthy/python-datemath/issues/15) - Fixed issue with parser finding invalid timeunits and throwing correct errors
 ### added
-- Feat: [Issue #16](https://github.com/nickmaccarthy/python-datemath/issues/16) - Added support for parser to accecpt a epoch/unix timestamp but throw an error on epoch milli's since arrow can't support that.  
+- Feat: [Issue #16](https://github.com/nickmaccarthy/python-datemath/issues/16) - Added support for parser to accecpt a epoch/unix timestamp but throw an error on epoch milli's since arrow can't support that.
 
 ## [1.5.0] - 2019-11-09
 
@@ -84,7 +97,7 @@ Please use 3.0.3 going forward!   3.0.2 has a breaking bug.
 
 ** PLEASE DO NOT USE THIS VERSION, use `1.5.0+` instead.  This may not compile on your system due to a missing VERSION.txt which was fixed in `1.5.0+` **
 
-### fixed 
+### fixed
 - [FIX] [Issue #9](https://github.com/nickmaccarthy/python-datemath/issues/9) && [Issue #8](https://github.com/nickmaccarthy/python-datemath/issues/8) - Fixing deprecated arrow `replace()` function with `shift()`.
 - [FIX] Arrow upgrade to `0.15.2` to fix the above mentioned issues
 - [FIX] Modifed `tests.py` to account for the timestamp change (tz is now `+0000`, instead of `-0000`)
@@ -101,7 +114,7 @@ Please use 3.0.3 going forward!   3.0.2 has a breaking bug.
 * skipped due to name conflict on pypi, all changes are in `1.4.9`
 
 ## [1.4.7] - 2017-11-10
-### fixed 
+### fixed
 - [FIX] Fixed timezone for date strings: [Issue #6](https://github.com/nickmaccarthy/python-datemath/issues/6)
 
 ## [1.4.5] - 2017-03-21
@@ -114,12 +127,12 @@ Please use 3.0.3 going forward!   3.0.2 has a breaking bug.
 <Arrow [2016-01-01T23:59:00+00:00]>
 >>> dm('now/d')
 <Arrow [2016-01-01T00:00:00+00:00]>
-```   
+```
 
 ## [1.4.4] - 2016-12-28
 ### fixed
 - [FIX] Fixed bug with expression logic and rounding:  https://github.com/nickmaccarthy/python-datemath/pull/2
 
 ## [1.4.3] - 2016-03-31
-### added 
-[NEW] Floats are now supported for days, hours, and seconds units.  Example ```now-2.5d```, ```now-3.2h```. Any other unit other than days, hours, or seconds that is a float will be converted to an int and floored due to the datetime() module not being able to handle them.
+### added
+[NEW] Floats are now supported for days, hours, and seconds units.  Example ```now-2.5d```, ```now-3.2h```. Any other unit other than days, hours, or seconds that is a float will be converted to an int and floored due to the datetime() module not being able to handle them.

Dockerfile

@@ -1,20 +1,20 @@
-# Use an official Python runtime as the base image
-FROM python:3.9
+FROM python:3.14-slim
 
-# Set the working directory in the container
-WORKDIR /app
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    PIP_NO_CACHE_DIR=1
 
-# Copy the contents of your project to the working directory
-COPY . .
+WORKDIR /app
 
-# Install the required dependencies
-RUN pip install -r requirements.txt
+COPY pyproject.toml uv.lock README.md LICENSE ./
+COPY datemath ./datemath
+COPY tests ./tests
+COPY verify.py ./
 
-# Run setup.py to install your module
-RUN python3 setup.py install
+RUN pip install --upgrade pip \
+    && pip install uv \
+    && uv sync --group dev --frozen
 
-# Run your tests to ensure everything works as expected
-RUN python3 -m unittest discover
+RUN uv run pytest
 
-# Set the entrypoint command to run your module
-CMD ["python3", "verify.py"]
+CMD ["uv", "run", "python", "verify.py"]

LICENSE

@@ -199,4 +199,3 @@
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-