Drop support for Python 3.8 and enable 3.13.

.github/workflows/main.yml

@@ -42,7 +42,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ['ubuntu-latest', 'macos-latest', 'windows-latest']
-        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
 
     steps:
       - uses: actions/checkout@v4

.gitignore

@@ -21,3 +21,4 @@ tests/test_jupyter/*.txt
 .pytest_cache
 .ruff_cache
 .venv
+uv.lock

pyproject.toml

@@ -6,16 +6,16 @@ classifiers = [
     "License :: OSI Approved :: MIT License",
     "Operating System :: OS Independent",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3 :: Only"
+    "Programming Language :: Python :: 3 :: Only",
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 dependencies = [
     "attrs>=21.3.0",
     "click",
     "cloudpickle",
     "loky",
     "pluggy>=1.0.0",
-    "pytask>=0.5.0",
+    "pytask>=0.5.2",
     "rich",
 ]
 dynamic = ["version"]
@@ -40,12 +40,7 @@ docs = [
     "sphinx-toolbox",
     "sphinxext-opengraph",
 ]
-test = [
-    "pytask-parallel[coiled,dask]",
-    "nbmake",
-    "pytest",
-    "pytest-cov",
-]
+test = ["pytask-parallel[coiled,dask]", "nbmake", "pytest", "pytest-cov"]
 
 [project.readme]
 file = "README.md"
@@ -70,9 +65,7 @@ build-backend = "hatchling.build"
 
 [tool.rye]
 managed = true
-dev-dependencies = [
-    "s3fs>=2024.3.1",
-]
+dev-dependencies = ["s3fs>=2024.3.1", "tox-uv>=1.7.0"]
 
 [tool.rye.scripts]
 clean-docs = { cmd = "rm -rf docs/build" }
@@ -112,17 +105,17 @@ disallow_untyped_defs = false
 ignore_errors = true
 
 [tool.ruff]
-target-version = "py38"
+target-version = "py39"
 fix = true
 unsafe-fixes = true
 
 [tool.ruff.lint]
 extend-ignore = [
-    "ANN101",  # type annotating self
-    "ANN102",  # type annotating cls
-    "ANN401",  # flake8-annotate typing.Any
-    "COM812",  # Comply with ruff-format.
-    "ISC001",  # Comply with ruff-format.
+    "ANN101", # type annotating self
+    "ANN102", # type annotating cls
+    "ANN401", # flake8-annotate typing.Any
+    "COM812", # Comply with ruff-format.
+    "ISC001", # Comply with ruff-format.
 ]
 select = ["ALL"]
 

src/pytask_parallel/backends.py

@@ -29,10 +29,10 @@ def _deserialize_and_run_with_cloudpickle(fn: bytes, kwargs: bytes) -> Any:
 class _CloudpickleProcessPoolExecutor(ProcessPoolExecutor):
     """Patches the standard executor to serialize functions with cloudpickle."""
 
-    # The type signature is wrong for Python >3.8. Fix when support is dropped.
-    def submit(  # type: ignore[override]
+    def submit(
         self,
         fn: Callable[..., Any],
+        /,
         *args: Any,  # noqa: ARG002
         **kwargs: Any,
     ) -> Future[Any]:

src/pytask_parallel/execute.py

@@ -282,12 +282,14 @@ def _update_carry_over_node(
             return x
         raise NotImplementedError
 
-    structure_carry_over_products = tree_structure(carry_over_products)
-    structure_produces = tree_structure(task.produces)
+    structure_carry_over_products = tree_structure(carry_over_products)  # type: ignore[arg-type]
+    structure_produces = tree_structure(task.produces)  # type: ignore[arg-type]
     # strict must be false when none is leaf.
     if structure_produces.is_prefix(structure_carry_over_products, strict=False):
         task.produces = tree_map(
-            _update_carry_over_node, task.produces, carry_over_products
+            _update_carry_over_node,
+            task.produces,  # type: ignore[arg-type]
+            carry_over_products,  # type: ignore[arg-type]
         )  # type: ignore[assignment]
 
 

src/pytask_parallel/wrappers.py

@@ -106,9 +106,11 @@ def wrap_task_in_process(  # noqa: PLR0913
     captured_stderr_buffer = StringIO()
 
     # Catch warnings and store them in a list.
-    with warnings.catch_warnings(record=True) as log, redirect_stdout(
-        captured_stdout_buffer
-    ), redirect_stderr(captured_stderr_buffer):
+    with (
+        warnings.catch_warnings(record=True) as log,
+        redirect_stdout(captured_stdout_buffer),
+        redirect_stderr(captured_stderr_buffer),
+    ):
         # Apply global filterwarnings.
         for arg in session_filterwarnings:
             warnings.filterwarnings(*parse_warning_filter(arg, escape=False))
@@ -267,7 +269,7 @@ def _save_and_carry_over_product(
         node.save(value)
         return None
 
-    return tree_map_with_path(_save_and_carry_over_product, task.produces)
+    return tree_map_with_path(_save_and_carry_over_product, task.produces)  # type: ignore[arg-type]
 
 
 def _write_local_files_to_remote(
@@ -279,7 +281,7 @@ def _write_local_files_to_remote(
     to be resolved.
 
     """
-    return tree_map(lambda x: x.load() if isinstance(x, RemotePathNode) else x, kwargs)  # type: ignore[return-value]
+    return tree_map(lambda x: x.load() if isinstance(x, RemotePathNode) else x, kwargs)  # type: ignore[arg-type, return-value]
 
 
 def _delete_local_files_on_remote(kwargs: dict[str, PyTree[Any]]) -> None:
@@ -296,4 +298,4 @@ def _delete(potential_node: Any) -> None:
                 os.close(potential_node.fd)
                 Path(potential_node.remote_path).unlink(missing_ok=True)
 
-    tree_map(_delete, kwargs)
+    tree_map(_delete, kwargs)  # type: ignore[arg-type]

tests/test_jupyter/test_functional_interface.ipynb

@@ -8,12 +8,12 @@
    "outputs": [],
    "source": [
     "from pathlib import Path\n",
+    "from typing import Annotated\n",
     "\n",
     "import pytask\n",
     "from pytask import ExitCode\n",
     "from pytask import PathNode\n",
-    "from pytask import PythonNode\n",
-    "from typing_extensions import Annotated"
+    "from pytask import PythonNode"
    ]
   },
   {

tests/test_jupyter/test_functional_interface_w_relative_path.ipynb

@@ -8,12 +8,12 @@
    "outputs": [],
    "source": [
     "from pathlib import Path\n",
+    "from typing import Annotated\n",
     "\n",
     "import pytask\n",
     "from pytask import ExitCode\n",
     "from pytask import PathNode\n",
-    "from pytask import PythonNode\n",
-    "from typing_extensions import Annotated"
+    "from pytask import PythonNode"
    ]
   },
   {