Fix isinstance issues.

jedi/evaluate/finder.py

@@ -401,7 +401,26 @@ def check_flow_information(evaluator, flow, search_name_part, pos):
     return result
 
 
-def _check_isinstance_type(evaluator, stmt, search_name_part):
+def _check_isinstance_type(evaluator, stmt, search_name):
+    def names(call, use_previous=False):
+        def check(call):
+            while call is not None:
+                if not isinstance(call, pr.Call):  # Could be an Array.
+                    raise ValueError
+                yield unicode(call.name)
+                if use_previous:
+                    call = call.previous
+                else:
+                    call = call.next
+
+        try:
+            if use_previous:
+                return list(check(call))
+            else:
+                return list(reversed(list(check(call))))
+        except ValueError:
+            return []
+
     try:
         expression_list = stmt.expression_list()
         # this might be removed if we analyze and, etc
@@ -418,8 +437,7 @@ def _check_isinstance_type(evaluator, stmt, search_name_part):
         assert len(classes) == 1
         assert isinstance(obj[0], pr.Call)
 
-        # names fit?
-        assert unicode(obj[0].name) == unicode(search_name_part.parent)
+        assert names(obj[0]) == names(search_name.parent, search_name)
         assert isinstance(classes[0], pr.StatementElement)  # can be type or tuple
     except AssertionError:
         return []