Breaking change: Don't extract value from 1-length dict (#399)

* dont extract value from dict

* fix test

* fix

Author: mski-iksm

gokart/task.py

@@ -290,10 +290,7 @@ def _load(targets):
                 return {k: _load(t) for k, t in targets.items()}
             return targets.load()
 
-        data = _load(self._get_input_targets(target))
-        if target is None and isinstance(data, dict) and len(data) == 1:
-            return list(data.values())[0]
-        return data
+        return _load(self._get_input_targets(target))
 
     @overload
     def load_generator(self, target: Union[None, str, TargetOnKart] = None) -> Generator[Any, None, None]: ...

test/test_task_on_kart.py

@@ -267,7 +267,7 @@ def test_load_with_single_dict_target(self):
 
         data = task.load()
         target.load.assert_called_once()
-        self.assertEqual(data, 1)
+        self.assertEqual(data, {'target_key': 1})
 
     def test_load_with_keyword(self):
         task = _DummyTask()