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

Author: Aniketsy

pandas/core/indexes/datetimes.py

@@ -702,12 +702,16 @@ def check_str_or_none(point) -> bool:
     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)
+        if method is None and tolerance is None and tgt.dtype == object:
+            result = super().get_indexer(
+                tgt, method=method, limit=limit, tolerance=tolerance
+            )
+            mask = [
+                isinstance(x, dt.date) and not isinstance(x, dt.datetime) for x in tgt
+            ]
+            result = np.array(result)
+            result[mask] = -1
+            return result
         return super().get_indexer(tgt, method=method, limit=limit, tolerance=tolerance)
 
     # --------------------------------------------------------------------