Replaced "Hashable" with "Label" form pandas._typing

As WillAyd suggested

Author: MomIsBestFriend

pandas/io/formats/excel.py

@@ -1,14 +1,17 @@
-"""Utilities for conversion to writer-agnostic Excel representation
+"""
+Utilities for conversion to writer-agnostic Excel representation.
 """
 
 from functools import reduce
 import itertools
 import re
-from typing import Callable, Dict, Hashable, Optional, Sequence, Union
+from typing import Callable, Dict, Optional, Sequence, Union
 import warnings
 
 import numpy as np
 
+from pandas._typing import Label
+
 from pandas.core.dtypes import missing
 from pandas.core.dtypes.common import is_float, is_scalar
 from pandas.core.dtypes.generic import ABCMultiIndex, ABCPeriodIndex
@@ -371,10 +374,10 @@ def __init__(
         df,
         na_rep: str = "",
         float_format: Optional[str] = None,
-        cols: Optional[Sequence[Hashable]] = None,
-        header: Union[Sequence[Hashable], bool] = True,
+        cols: Optional[Sequence[Label]] = None,
+        header: Union[Sequence[Label], bool] = True,
         index: bool = True,
-        index_label: Optional[Union[Hashable, Sequence[Hashable]]] = None,
+        index_label: Optional[Union[Label, Sequence[Label]]] = None,
         merge_cells: bool = False,
         inf_rep: str = "inf",
         style_converter: Optional[Callable] = None,

pandas/io/formats/style.py

@@ -12,7 +12,6 @@
     Callable,
     DefaultDict,
     Dict,
-    Hashable,
     List,
     Optional,
     Sequence,
@@ -26,7 +25,7 @@
 from pandas._config import get_option
 
 from pandas._libs import lib
-from pandas._typing import Axis, FrameOrSeries, FrameOrSeriesUnion
+from pandas._typing import Axis, FrameOrSeries, FrameOrSeriesUnion, Label
 from pandas.compat._optional import import_optional_dependency
 from pandas.util._decorators import Appender
 
@@ -210,10 +209,10 @@ def to_excel(
         sheet_name: str = "Sheet1",
         na_rep: str = "",
         float_format: Optional[str] = None,
-        columns: Optional[Sequence[Hashable]] = None,
-        header: Union[Sequence[Hashable], bool] = True,
+        columns: Optional[Sequence[Label]] = None,
+        header: Union[Sequence[Label], bool] = True,
         index: bool = True,
-        index_label: Optional[Union[Hashable, Sequence[Hashable]]] = None,
+        index_label: Optional[Union[Label, Sequence[Label]]] = None,
         startrow: int = 0,
         startcol: int = 0,
         engine: Optional[str] = None,