add allow_slice=False

Author: LirongMa

pandas/core/frame.py

@@ -4050,7 +4050,7 @@ def __getitem__(self, key):
         key = lib.item_from_zerodim(key)
         key = com.apply_if_callable(key, self)
 
-        if is_hashable(key) and not is_iterator(key) and not isinstance(key, slice):
+        if is_hashable(key, allow_slice=False) and not is_iterator(key):
             # is_iterator to exclude generator e.g. test_getitem_listlike
             # As of Python 3.12, slice is hashable which breaks MultiIndex (GH#57500)
 

pandas/core/indexing.py

@@ -793,8 +793,7 @@ def _get_setitem_indexer(self, key):
         if (
             isinstance(ax, MultiIndex)
             and self.name != "iloc"
-            and is_hashable(key)
-            and not isinstance(key, slice)
+            and is_hashable(key, allow_slice=False)
         ):
             with suppress(KeyError, InvalidIndexError):
                 # TypeError e.g. passed a bool
@@ -1147,8 +1146,7 @@ def _contains_slice(x: object) -> bool:
                 # This should never be reached, but let's be explicit about it
                 raise ValueError("Too many indices")  # pragma: no cover
             if all(
-                (is_hashable(x) and not _contains_slice(x)) or com.is_null_slice(x)
-                for x in tup
+                is_hashable(x, allow_slice=False) or com.is_null_slice(x) for x in tup
             ):
                 # GH#10521 Series should reduce MultiIndex dimensions instead of
                 #  DataFrame, IndexingError is not raised when slice(None,None,None)
@@ -1511,12 +1509,8 @@ def _convert_to_indexer(self, key, axis: AxisInt):
 
         # Slices are not valid keys passed in by the user,
         # even though they are hashable in Python 3.12
-        contains_slice = False
-        if isinstance(key, tuple):
-            contains_slice = any(isinstance(v, slice) for v in key)
-
         if is_scalar(key) or (
-            isinstance(labels, MultiIndex) and is_hashable(key) and not contains_slice
+            isinstance(labels, MultiIndex) and is_hashable(key, allow_slice=False)
         ):
             # Otherwise get_loc will raise InvalidIndexError
 

pandas/core/series.py

@@ -953,7 +953,7 @@ def __getitem__(self, key):
         if is_iterator(key):
             key = list(key)
 
-        if is_hashable(key) and not isinstance(key, slice):
+        if is_hashable(key, allow_slice=False):
             # Otherwise index.get_value will raise InvalidIndexError
             try:
                 # For labels that don't resolve as scalars like tuples and frozensets