build: drop python 3.7 (#208)

* build: drop python 3.7

* style(pre-commit.ci): auto fixes [...]

* no cover

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

.github/workflows/ci.yml

@@ -30,16 +30,7 @@ jobs:
       fail-fast: false
       matrix:
         platform: [macos-latest, windows-latest, "ubuntu-latest"]
-        python-version: ["3.9", "3.10", "3.11"]
-        include:
-          - python-version: "3.7"
-            platform: "ubuntu-latest"
-          - python-version: "3.8"
-            platform: "ubuntu-latest"
-          - python-version: "3.8"
-            platform: "windows-latest"
-          - python-version: "3.12-dev"
-            platform: "ubuntu-latest"
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
 
     steps:
       - uses: actions/checkout@v4

.github/workflows/cron.yml

@@ -19,8 +19,6 @@ jobs:
         python-version: ['3.9', '3.10', '3.11']
         platform: [ubuntu-latest, macos-latest, windows-latest]
         include:
-          - python-version: "3.7"
-            platform: "ubuntu-latest"
           - python-version: "3.8"
             platform: "ubuntu-latest"
           - python-version: "3.8"

pyproject.toml

@@ -7,14 +7,13 @@ build-backend = "hatchling.build"
 name = "nd2"
 description = "Yet another nd2 (Nikon NIS Elements) file reader"
 readme = "README.md"
-requires-python = ">=3.7"
+requires-python = ">=3.8"
 license = { text = "BSD 3-Clause License" }
 authors = [{ email = "[email protected]", name = "Talley Lambert" }]
 classifiers = [
     "Development Status :: 4 - Beta",
     "License :: OSI Approved :: BSD License",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
@@ -69,17 +68,14 @@ documentation = "https://tlambert03.github.io/nd2/"
 [tool.hatch.version]
 source = "vcs"
 
-[tool.hatch.build.hooks.vcs]
-version-file = "src/nd2/_version.py"
-
 [tool.hatch.build.targets.wheel]
 only-include = ["src"]
 sources = ["src"]
 
 # https://beta.ruff.rs/docs/rules/
 [tool.ruff]
 line-length = 88
-target-version = "py37"
+target-version = "py38"
 src = ["src/nd2", "tests"]
 select = [
     "E",      # style errors

src/nd2/__init__.py

@@ -1,9 +1,12 @@
 """nd2: A Python library for reading and writing ND2 files."""
 
+from importlib.metadata import PackageNotFoundError, version
+
 try:
-    from ._version import version as __version__
-except ImportError:
+    __version__ = version(__name__)
+except PackageNotFoundError:  # pragma: no cover
     __version__ = "unknown"
+
 __author__ = "Talley Lambert"
 __email__ = "[email protected]"
 __all__ = [

src/nd2/_sdk_types.py

@@ -3,10 +3,12 @@
 from __future__ import annotations
 
 from enum import IntEnum, auto
-from typing import TYPE_CHECKING, Union
+from typing import TYPE_CHECKING
 
 if TYPE_CHECKING:
-    from typing_extensions import Literal, NotRequired, TypeAlias, TypedDict
+    from typing import Literal, TypedDict, Union
+
+    from typing_extensions import NotRequired, TypeAlias
 
     class RawAttributesDict(TypedDict, total=False):
         uiWidth: int

src/nd2/_util.py

@@ -9,9 +9,7 @@
 
 if TYPE_CHECKING:
     from os import PathLike
-    from typing import Any, Callable, ClassVar, Mapping, Sequence, Union
-
-    from typing_extensions import Final
+    from typing import Any, Callable, ClassVar, Final, Mapping, Sequence, Union
 
     from nd2.readers import ND2Reader
     from nd2.structures import ExpLoop

src/nd2/index.py

@@ -7,9 +7,7 @@
 from concurrent.futures import ThreadPoolExecutor
 from datetime import datetime
 from pathlib import Path
-from typing import Any, Iterable, Iterator, Sequence, cast, no_type_check
-
-from typing_extensions import TypedDict
+from typing import Any, Iterable, Iterator, Sequence, TypedDict, cast, no_type_check
 
 import nd2
 

src/nd2/nd2file.py

@@ -20,13 +20,12 @@
 
 if TYPE_CHECKING:
     from pathlib import Path
-    from typing import Any, Sequence, Sized, SupportsInt
+    from typing import Any, Literal, Sequence, Sized, SupportsInt
 
     import dask.array
     import dask.array.core
     import xarray as xr
     from ome_types import OME
-    from typing_extensions import Literal
 
     from ._binary import BinaryLayers
     from ._util import (

src/nd2/readers/_legacy/legacy_reader.py

@@ -22,9 +22,7 @@
 
 if TYPE_CHECKING:
     from collections import defaultdict
-    from typing import Any, BinaryIO, Mapping
-
-    from typing_extensions import TypedDict
+    from typing import Any, BinaryIO, Mapping, TypedDict
 
     from nd2._util import FileOrBinaryIO
 

src/nd2/readers/_modern/modern_reader.py

@@ -31,8 +31,9 @@
 if TYPE_CHECKING:
     import datetime
     from os import PathLike
+    from typing import Literal
 
-    from typing_extensions import Literal, TypeAlias
+    from typing_extensions import TypeAlias
 
     from nd2._binary import BinaryLayers
     from nd2._parse._chunk_decode import ChunkMap

src/nd2/readers/protocol.py

@@ -10,10 +10,9 @@
 from nd2._parse._chunk_decode import get_version
 
 if TYPE_CHECKING:
-    from typing import Any, ContextManager, Mapping, Sequence
+    from typing import Any, ContextManager, Literal, Mapping, Sequence
 
     import numpy as np
-    from typing_extensions import Literal
 
     from nd2._binary import BinaryLayers
     from nd2._util import FileOrBinaryIO

src/nd2/structures.py

@@ -3,9 +3,7 @@
 import builtins
 from dataclasses import dataclass, field
 from enum import IntEnum
-from typing import TYPE_CHECKING, NamedTuple, Union
-
-from typing_extensions import Literal, TypedDict
+from typing import TYPE_CHECKING, Literal, NamedTuple, TypedDict, Union
 
 from ._sdk_types import EventMeaning, StimulationType
 

tests/test_aicsimage.py

@@ -4,7 +4,6 @@
 It may need updating if it changes upstream
 """
 
-import sys
 from pathlib import Path
 from typing import List, Optional, Tuple
 
@@ -18,7 +17,6 @@
 DATA = Path(__file__).parent / "data"
 
 
-@pytest.mark.skipif(sys.version_info < (3, 8), reason="requires python3.8 or higher")
 @pytest.mark.parametrize(
     (
         "filename",

tests/test_metadata.py

@@ -3,7 +3,7 @@
 import json
 import sys
 from pathlib import Path
-from typing import TYPE_CHECKING
+from typing import Literal
 
 import dask.array as da
 import pytest
@@ -18,9 +18,6 @@
 except ImportError:
     xr = None
 
-if TYPE_CHECKING:
-    from typing_extensions import Literal
-
 
 with open("tests/samples_metadata.json") as f:
     EXPECTED = json.load(f)