BUG: Remove special-casing for Python date objects in DatetimeIndex

Author: Aniketsy

pandas/core/indexes/datetimes.py

@@ -42,6 +42,7 @@
     tz_to_dtype,
 )
 import pandas.core.common as com
+from pandas.core.indexes.api import ensure_index
 from pandas.core.indexes.base import (
     Index,
     maybe_extract_name,
@@ -698,6 +699,17 @@ def check_str_or_none(point) -> bool:
         else:
             return indexer
 
+    def get_indexer(self, target, method=None, limit=None, tolerance=None):
+        # Ensure Python `date` objects never match DatetimeIndex elements (GH#62158)
+        tgt = ensure_index(target)
+        if (
+            method is None
+            and tolerance is None
+            and getattr(tgt, "inferred_type", None) == "date"
+        ):
+            return np.full(len(tgt), -1, dtype=np.intp)
+        return super().get_indexer(tgt, method=method, limit=limit, tolerance=tolerance)
+
     # --------------------------------------------------------------------
 
     @property