chore(dev): Run cython-lint against codebase, add it to pre-commit

.pre-commit-config.yaml

@@ -78,5 +78,12 @@ repos:
     hooks:
       - id: actionlint
 
+  - repo: https://github.com/MarcoGorelli/cython-lint
+    rev: "d9ff7ce99ef4f2ae8fba93079ca9d76c4651d4ac"  # frozen: v0.18.0
+    hooks:
+      - id: cython-lint
+        args: [--no-pycodestyle]
+        exclude: ^cuda_bindings/
+
 default_language_version:
       python: python3

cuda_core/cuda/core/experimental/_context.pyx

@@ -4,7 +4,6 @@
 
 from dataclasses import dataclass
 
-from cuda.core.experimental._utils.clear_error_support import assert_type
 from cuda.core.experimental._utils.cuda_utils import driver
 
 

cuda_core/cuda/core/experimental/_memory.pyx

@@ -20,8 +20,6 @@ from cuda.core.experimental._utils.cuda_utils cimport (
 )
 
 import abc
-import array
-import contextlib
 import cython
 from dataclasses import dataclass, field
 from typing import Iterable, Literal, Optional, TYPE_CHECKING, TypeVar, Union
@@ -34,9 +32,6 @@ from cuda.core.experimental._dlpack import DLDeviceType, make_py_capsule
 from cuda.core.experimental._stream import Stream
 from cuda.core.experimental._utils.cuda_utils import ( driver, Transaction, get_binding_version )
 
-if platform.system() == "Linux":
-    import socket
-
 if TYPE_CHECKING:
     from ._device import Device
     import uuid

cuda_core/cuda/core/experimental/_memoryview.pyx

@@ -2,12 +2,10 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
-cimport cython
-
 from ._dlpack cimport *
 
 import functools
-from typing import Any, Optional
+from typing import Optional
 
 import numpy
 
@@ -226,7 +224,7 @@ cdef class _StridedMemoryViewProxy:
 
 
 cdef StridedMemoryView view_as_dlpack(obj, stream_ptr, view=None):
-    cdef int dldevice, device_id, i
+    cdef int dldevice, device_id
     cdef bint is_device_accessible, is_readonly
     is_device_accessible = False
     dldevice, device_id = obj.__dlpack_device__()

cuda_core/cuda/core/experimental/_stream.pyx

@@ -18,7 +18,6 @@ from cuda.core.experimental._utils.cuda_utils cimport (
 )
 
 import cython
-import os
 import warnings
 from dataclasses import dataclass
 from typing import TYPE_CHECKING, Optional, Protocol, Union
@@ -29,7 +28,6 @@ if TYPE_CHECKING:
 from cuda.core.experimental._context import Context
 from cuda.core.experimental._event import Event, EventOptions
 from cuda.core.experimental._graph import GraphBuilder
-from cuda.core.experimental._utils.clear_error_support import assert_type
 from cuda.core.experimental._utils.cuda_utils import (
     driver,
 )