fix isort issues

Author: Dr-Irv

pandas-stubs/core/indexers/__init__.pyi

@@ -0,0 +1,2 @@
+from pandas.core.indexers.objects import BaseIndexer as BaseIndexer
+from pandas.core.indexers.utils import check_array_indexer as check_array_indexer

pandas-stubs/core/indexers/objects.pyi

@@ -0,0 +1,31 @@
+from typing import Any
+
+import numpy as np
+from pandas import DatetimeIndex
+
+from pandas._libs.tslibs import BaseOffset
+
+class BaseIndexer:
+    def __init__(
+        self, index_array: np.ndarray | None = None, window_size: int = 0, **kwargs: Any
+    ) -> None: ...
+    def get_window_bounds(
+        self,
+        num_values: int,
+        min_periods: int | None,
+        center: bool | None,
+        closed: str | None = None,
+        step: int | None = None,
+    ) -> tuple[np.ndarray, np.ndarray]: ...
+
+class FixedForwardWindowIndexer(BaseIndexer): ...
+
+class VariableOffsetWindowIndexer(BaseIndexer):
+    def __init__(
+        self,
+        index_array: np.ndarray | None = None,
+        window_size: int = 0,
+        index: DatetimeIndex | None = None,
+        offset: BaseOffset | None = None,
+        **kwargs: Any,
+    ) -> None: ...

pandas-stubs/core/indexers/utils.pyi

@@ -0,0 +1,14 @@
+from typing import overload
+
+from pandas._typing import (
+    AnyArrayLike,
+    ListLike,
+    np_ndarray_int,
+)
+
+@overload
+def check_array_indexer(array: AnyArrayLike, indexer: int) -> int: ...
+@overload
+def check_array_indexer(array: AnyArrayLike, indexer: slice) -> slice: ...
+@overload
+def check_array_indexer(array: AnyArrayLike, indexer: ListLike) -> np_ndarray_int: ...