Suppress useless-super-delegation if return type changed (pylint-…

…dev#5822)

pylint/checkers/classes/class_checker.py

@@ -1263,6 +1263,13 @@ def _check_useless_super_delegation(self, function):
 
         if meth_node is not None:
 
+            if (
+                function.returns is not None
+                and (meth_node.returns is None or meth_node.returns.as_string() != function.returns.as_string())
+            ):
+                # Override adds typing information to the return type
+                return
+
             def form_annotations(arguments):
                 annotations = chain(
                     (arguments.posonlyargs_annotations or []), arguments.annotations

tests/functional/u/useless/useless_super_delegation_py3.py

@@ -41,3 +41,30 @@ def __init__(self, thing: object) -> None: # [useless-super-delegation]
 class Test:
     def __init__(self, _arg: List[int]) -> None:
         super().__init__()
+
+
+import random
+
+class ReturnTypeAny:
+    choices = ['a', 1, (2, 3)]
+
+    def draw(self) -> None:
+        return random.choice(self.choices)
+
+class ReturnTypeNarrowed(ReturnTypeAny):
+    choices = [1, 2, 3]
+
+    def draw(self) -> int:
+        return super().draw()
+
+class NoReturnType:
+    choices = ['a', 1, (2, 3)]
+
+    def draw(self):
+        return random.choice(self.choices)
+
+class ReturnTypeSpecified(NoReturnType):
+    choices = ['a', 'b']
+
+    def draw(self) -> str:
+        return super().draw()