Added KeyError Exception for MultiIndexes

Author: ryanreh99

pandas/core/indexing.py

@@ -945,7 +945,7 @@ def _handle_lowerdim_multi_index_axis0(self, tup):
             # slices are unhashable
             pass
         except KeyError:
-            return self._get_label(tup, axis=self.axis)
+            return None
         except Exception as e1:
             if isinstance(tup[0], (slice, Index)):
                 raise IndexingError("Handle elsewhere")
@@ -978,6 +978,10 @@ def _getitem_lowerdim(self, tup):
                 return result
 
         if len(tup) > self.obj.ndim:
+            try:
+                self._get_label(tup, axis=self.axis)
+            except KeyError:
+                return self._get_label(tup, axis=self.axis)
             raise IndexingError("Too many indexers. handle elsewhere")
 
         # to avoid wasted computation

pandas/tests/indexing/multiindex/test_getitem.py

@@ -85,7 +85,7 @@ def test_series_getitem_returns_scalar(
 @pytest.mark.parametrize('indexer,expected_error,expected_error_msg', [
     (lambda s: s.__getitem__((2000, 3, 4)), KeyError, r"^356L?$"),
     (lambda s: s[(2000, 3, 4)], KeyError, r"^356L?$"),
-    (lambda s: s.loc[(2000, 3, 4)], IndexingError, 'Too many indexers'),
+    (lambda s: s.loc[(2000, 3, 4)], KeyError, r"^356L?$"),
     (lambda s: s.__getitem__(len(s)), IndexError, 'index out of bounds'),
     (lambda s: s[len(s)], IndexError, 'index out of bounds'),
     (lambda s: s.iloc[len(s)], IndexError,