a first very simple implementation of reachable/unreachable return statements.

jedi/evaluate/compiled/__init__.py

@@ -48,6 +48,9 @@ class CompiledObject(Base):
     def py__mro__(self, evaluator):
         return tuple(create(evaluator, cls) for cls in self.obj.__mro__)
 
+    def py__bool__(self):
+        return bool(self.obj)
+
     @property
     def doc(self):
         return inspect.getdoc(self.obj) or ''