diff --git a/jedi/evaluate/compiled/fake.py b/jedi/evaluate/compiled/fake.py
index 436f149f..a979f263 100644
--- a/jedi/evaluate/compiled/fake.py
+++ b/jedi/evaluate/compiled/fake.py
@@ -116,8 +116,6 @@ def _faked(module, obj, name):
     if faked_mod is None:
         return None, None
 
-    module.used_names = faked_mod.used_names
-
     # Having the module as a `parser.representation.module`, we need to scan
     # for methods.
     if name is None:
@@ -193,7 +191,8 @@ def _get_faked(module, obj, name=None):
 def get_faked(module, obj, name=None, parent=None):
     faked, fake_module = _get_faked(module and module.obj, obj, name)
     faked.parent = parent
-    module.used_names = fake_module.used_names
+    if module is not None:
+        module.used_names = fake_module.used_names
     return faked
 
 
diff --git a/jedi/evaluate/iterable.py b/jedi/evaluate/iterable.py
index 79a1a0e2..b165f1fb 100644
--- a/jedi/evaluate/iterable.py
+++ b/jedi/evaluate/iterable.py
@@ -31,6 +31,7 @@ from jedi.evaluate.cache import CachedMetaClass, memoize_default
 from jedi.evaluate import analysis
 from jedi.evaluate import pep0484
 from jedi import common
+from jedi.evaluate.filters import DictFilter
 
 
 class IterableWrapper(tree.Base):
@@ -56,10 +57,10 @@ class IterableWrapper(tree.Base):
                 try:
                     method = builtin_methods[name_str, self.type]
                 except KeyError:
-                    dct[name_str] = [name]
+                    dct[name_str] = name
                 else:
                     parent = BuiltinMethod(self, method, name.parent)
-                    dct[name_str] = [helpers.FakeName(name_str, parent, is_definition=True)]
+                    dct[name_str] = helpers.FakeName(name_str, parent, is_definition=True)
         return dct
 
 
@@ -111,6 +112,10 @@ class GeneratorMixin(object):
         gen_obj = compiled.get_special_object(self._evaluator, 'GENERATOR_OBJECT')
         yield self._get_names_dict(gen_obj.names_dict)
 
+    def get_filters(self, search_global, until_position=None, origin_scope=None):
+        gen_obj = compiled.get_special_object(self._evaluator, 'GENERATOR_OBJECT')
+        yield DictFilter(self._get_names_dict(gen_obj.names_dict))
+
     def py__bool__(self):
         return True