style: pre-commit fixes

Author: pre-commit-ci[bot]

numcodecs/abc.py

@@ -29,14 +29,13 @@
 """
 
 from abc import ABC, abstractmethod
-from typing import Optional
 
 
 class Codec(ABC):
     """Codec abstract base class."""
 
     # override in sub-class
-    codec_id: Optional[str] = None
+    codec_id: str | None = None
     """Codec identifier."""
 
     @abstractmethod

numcodecs/checksum32.py

@@ -3,7 +3,7 @@
 import zlib
 from contextlib import suppress
 from types import ModuleType
-from typing import Literal, Optional
+from typing import Literal
 
 import numpy as np
 from typing_extensions import Buffer
@@ -12,7 +12,7 @@
 from .compat import ensure_contiguous_ndarray, ndarray_copy
 from .jenkins import jenkins_lookup3
 
-_crc32c: Optional[ModuleType] = None
+_crc32c: ModuleType | None = None
 with suppress(ImportError):
     import crc32c as _crc32c  # type: ignore[no-redef, unused-ignore]
 

numcodecs/lzma.py

@@ -1,7 +1,6 @@
 from types import ModuleType
-from typing import Optional
 
-_lzma: Optional[ModuleType] = None
+_lzma: ModuleType | None = None
 try:
     import lzma as _lzma
 except ImportError:  # pragma: no cover

numcodecs/zfpy.py

@@ -2,9 +2,8 @@
 from contextlib import suppress
 from importlib.metadata import PackageNotFoundError, version
 from types import ModuleType
-from typing import Optional
 
-_zfpy: Optional[ModuleType] = None
+_zfpy: ModuleType | None = None
 
 _zfpy_version: tuple = ()
 with suppress(PackageNotFoundError):