type of NamePart in definition should work.

jedi/api/__init__.py

@@ -518,7 +518,7 @@ class Script(object):
         names = usages.usages(self._evaluator, definitions, search_name, module)
 
         for d in set(definitions):
-            if isinstance(d, pr.Module):
+            if isinstance(d, (pr.Module, compiled.CompiledObject)):
                 names.append(usages.Usage(self._evaluator, d, d))
             elif isinstance(d, er.Instance):
                 # Instances can be ignored, because they have been created by

jedi/api/classes.py

@@ -137,6 +137,8 @@ class BaseDefinition(object):
             return stripped.type()
         if isinstance(stripped, er.InstanceElement):
             stripped = stripped.var
+        if isinstance(stripped, pr.NamePart):
+            stripped = stripped.parent
         if isinstance(stripped, pr.Name):
             stripped = stripped.parent
         return type(stripped).__name__.lower()

jedi/api/usages.py

@@ -9,10 +9,10 @@ from jedi.evaluate import helpers
 class Usage(classes.Definition):
     """TODO: document this"""
     def __init__(self, evaluator, name_part, scope):
-        super(Usage, self).__init__(evaluator, scope)
+        super(Usage, self).__init__(evaluator, name_part)
         self._start_pos = name_part.start_pos
         self.text = unicode(name_part)
-        self.end_pos = name_part.end_pos
+        #self.end_pos = name_part.end_pos
 
     @property
     def description(self):