Add support for Python 3.15 and fix deprecation warnings

.github/actions/python-poetry-env/action.yml

@@ -13,6 +13,9 @@ runs:
     - uses: actions/setup-python@v5
       with:
         python-version: ${{inputs.python-version}}
+        allow-prereleases: true
+        cache: 'pip'
+        cache-dependency-path: 'poetry.lock'
     - name: Install poetry
       run: python -m pip install poetry
       shell: bash

.github/workflows/cookiecutter.yml

@@ -8,9 +8,9 @@ jobs:
   auto-update-project:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.12"
 
@@ -68,7 +68,7 @@ jobs:
           # a PAT is required to be able to update workflows
           GITHUB_TOKEN: ${{ secrets.AUTO_UPDATE_GITHUB_TOKEN }}
         if: ${{ steps.changes.outputs.changed > 0 && env.GITHUB_TOKEN != 0 }}
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v8
         with:
           token: ${{ env.GITHUB_TOKEN }}
           commit-message: >-

.github/workflows/dependencies.yml

@@ -8,7 +8,7 @@ jobs:
   auto-update-dependencies:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: ./.github/actions/python-poetry-env
 
       - name: Install tabulate
@@ -46,7 +46,7 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         if: ${{ steps.check_for_outdated_dependencies.outputs.body != 0 }}
-        uses: peter-evans/create-pull-request@v3
+        uses: peter-evans/create-pull-request@v8
         with:
           token: ${{ env.GITHUB_TOKEN }}
           commit-message: >-

.github/workflows/draft_release.yml

@@ -12,7 +12,7 @@ jobs:
   draft-release:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: ./.github/actions/python-poetry-env
       - name: Update version
         id: updated_version

.github/workflows/release.yml

@@ -8,7 +8,7 @@ jobs:
   build-and-publish:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: ./.github/actions/python-poetry-env
       - name: Publish to pypi
         run: |

.github/workflows/test.yml

@@ -6,11 +6,14 @@ on:
     branches:
       - "**"
 
+env:
+  FORCE_COLOR: 1
+
 jobs:
   actionlint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - name: Download actionlint
         run: bash <(curl https://raw.githubusercontent.com/rhysd/actionlint/main/scripts/download-actionlint.bash) 1.6.21
         shell: bash
@@ -22,14 +25,14 @@ jobs:
     name: Check if automatic project update was successful
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - name: Fail if .rej files exist as structure update was not successful
         run: test -z "$(find . -iname '*.rej')"
 
   pre-commit:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: ./.github/actions/python-poetry-env
       - run: poetry run pre-commit run --all-files
 
@@ -38,9 +41,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: ./.github/actions/python-poetry-env
         with:
           python-version: ${{ matrix.python-version }}
@@ -49,6 +52,6 @@ jobs:
   docs:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - uses: ./.github/actions/python-poetry-env
       - run: poetry run mkdocs build

CHANGELOG.md

@@ -4,6 +4,9 @@ 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]
+### Added
+- Support for Python 3.15
+
 ### Fixed
 - Fix malformed bullet points rendering in GitHub Pages documentation
 

pyproject.toml

@@ -23,6 +23,7 @@ classifiers = [
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
   "Programming Language :: Python :: 3.14",
+  "Programming Language :: Python :: 3.15",
   "Topic :: Software Development :: Libraries :: Python Modules",
   "Typing :: Typed",
 ]
@@ -60,7 +61,7 @@ slowest-tests = "pytest_split.cli:list_slowest_tests"
 pytest-split = "pytest_split.plugin"
 
 [tool.black]
-target-version = ["py310", "py311", "py312", "py313", "py314"]
+target-version = ["py310", "py311", "py312", "py313", "py314", "py315"]
 include = '\.pyi?$'
 
 [tool.pytest.ini_options]

src/pytest_split/cli.py

@@ -11,7 +11,6 @@ def list_slowest_tests() -> None:
             "default is .test_durations in the current working directory"
         ),
         default=".test_durations",
-        type=argparse.FileType(),
     )
     parser.add_argument(
         "-c",
@@ -21,7 +20,9 @@ def list_slowest_tests() -> None:
         type=int,
     )
     args = parser.parse_args()
-    return _list_slowest_tests(json.load(args.durations_path), args.count)
+    with open(args.durations_path) as f:
+        durations = json.load(f)
+    return _list_slowest_tests(durations, args.count)
 
 
 def _list_slowest_tests(durations: "dict[str, float]", count: int) -> None:

tests/test_cli.py

@@ -14,8 +14,7 @@ def durations_file(tmpdir):
     durations = {f"test_{i}": float(i) for i in range(1, 11)}
     with open(durations_path, "w") as f:
         json.dump(durations, f)
-    with open(durations_path) as f:
-        yield f
+    return durations_path
 
 
 def test_slowest_tests(durations_file):