ENH: add Shape alias to _typing

Author: arw2019

pandas/_typing.py

@@ -16,6 +16,7 @@
     Mapping,
     Optional,
     Sequence,
+    Tuple,
     Type,
     TypeVar,
     Union,
@@ -85,6 +86,7 @@
 Label = Optional[Hashable]
 IndexLabel = Union[Label, Sequence[Label]]
 Level = Union[Label, int]
+Shape = Union[int, Tuple[int, ...]]
 Ordered = Optional[bool]
 JSONSerializable = Optional[Union[PythonScalar, List, Dict]]
 Axes = Collection