🥅 raise more specific error if dict is appended to frame without ignore_index

Author: Marco Gorelli

pandas/core/frame.py

@@ -7023,6 +7023,8 @@ def append(
         """
         if isinstance(other, (Series, dict)):
             if isinstance(other, dict):
+                if not ignore_index:
+                    raise TypeError("Can only append a dict if ignore_index=True")
                 other = Series(other)
             if other.name is None and not ignore_index:
                 raise TypeError(

pandas/tests/frame/methods/test_append.py

@@ -50,6 +50,10 @@ def test_append_series_dict(self):
         )
         tm.assert_frame_equal(result, expected.loc[:, result.columns])
 
+        msg = "Can only append a dict if ignore_index=True"
+        with pytest.raises(TypeError, match=msg):
+            df.append(series.to_dict())
+
         # can append when name set
         row = df.loc[4]
         row.name = 5