Don't use __qualname__ on Python 2, as it does not exists.

Closes  #9756

IPython/core/interactiveshell.py

@@ -187,8 +187,12 b' class ExecutionResult(object):'
             raise self.error_in_exec
 
     def __repr__(self):
+        if sys.version_info > (3,):
+            name = self.__class__.__qualname__
+        else:
+            name = self.__class__.__name__
         return '<%s object at %x, execution_count=%s error_before_exec=%s error_in_exec=%s result=%s>' %\
-                (self.__class__.__qualname__, id(self), self.execution_count, self.error_before_exec, self.error_in_exec, repr(self.result))
+                (name, id(self), self.execution_count, self.error_before_exec, self.error_in_exec, repr(self.result))
 
 
 class InteractiveShell(SingletonConfigurable):