diff --git a/jedi/evaluate/param.py b/jedi/evaluate/param.py
index 52202bdc..4a03b7c8 100644
--- a/jedi/evaluate/param.py
+++ b/jedi/evaluate/param.py
@@ -16,7 +16,8 @@ class Arguments(pr.Base):
     def __init__(self, evaluator, argument_node, trailer=None):
         """
         The argument_node is either a parser node or a list of evaluated
-        objects.
+        objects. Those evaluated objects may be lists of evaluated objects
+        themselves (one list for the first argument, one for the second, etc).
         """
         self.argument_node = argument_node
         self._evaluator = evaluator
@@ -68,6 +69,8 @@ class Arguments(pr.Base):
             else:
                 if pr.is_node(el, 'argument'):
                     named_args.append((el.children[0].value, (el.children[2],)))
+                elif isinstance(el, (list, tuple)):
+                    yield None, el
                 else:
                     yield None, (el,)
 
diff --git a/jedi/evaluate/representation.py b/jedi/evaluate/representation.py
index 72fd731e..1076a27c 100644
--- a/jedi/evaluate/representation.py
+++ b/jedi/evaluate/representation.py
@@ -199,7 +199,7 @@ class Instance(use_metaclass(CachedMetaClass, Executed)):
             yield self, [get_instance_el(self._evaluator, self, var, True)
                          for var in names]
 
-    def get_index_types(self, index_array):
+    def get_index_types(self, evaluator, index_array):
 
         indexes = iterable.create_indexes_or_slices(self._evaluator, index_array)
         if any([isinstance(i, iterable.Slice) for i in indexes]):
@@ -208,9 +208,8 @@ class Instance(use_metaclass(CachedMetaClass, Executed)):
             # TODO support slices in a more general way.
             indexes = []
 
-        index = helpers.FakeStatement(indexes, parent=compiled.builtin)
         try:
-            return self.execute_subscope_by_name('__getitem__', [index])
+            return self.execute_subscope_by_name('__getitem__', [indexes])
         except KeyError:
             debug.warning('No __getitem__, cannot access the array.')
             return []