Apply suggestions from code review

Co-authored-by: Stanislav Terliakov <[email protected]>

Author: ilevkivskyi

mypy/checker.py

@@ -4501,7 +4501,7 @@ def set_inferred_type(self, var: Var, lvalue: Lvalue, type: Type) -> None:
                     if isinstance(p_type, Overloaded):
                         # TODO: in theory we can have a property with a deleter only.
                         var.is_settable_property = True
-                        assert isinstance(definition, Decorator)
+                        assert isinstance(definition, Decorator), definition
                         var.setter_type = definition.var.setter_type
 
     def set_inference_error_fallback_type(self, var: Var, lvalue: Lvalue, type: Type) -> None:

mypy/checkmember.py

@@ -984,7 +984,7 @@ def expand_and_bind_callable(
             # A broken overload, error should be already reported.
             return AnyType(TypeOfAny.from_error)
         expanded = expanded.items[0]
-    assert isinstance(expanded, CallableType)
+    assert isinstance(expanded, CallableType), expanded
     if var.is_settable_property and mx.is_lvalue and var.setter_type is not None:
         if expanded.variables:
             type_ctx = mx.rvalue or TempNode(AnyType(TypeOfAny.special_form), context=mx.context)