Fix some small things to get more tests passing

jedi/evaluate/context/instance.py

@@ -504,7 +504,7 @@ class SelfAttributeFilter(ClassFilter):
             if trailer.type == 'trailer' \
                     and len(trailer.parent.children) == 2 \
                     and trailer.children[0] == '.':
-                if name.is_definition() and self._access_possible(name):
+                if name.is_definition() and self._access_possible(name, from_instance=True):
                     # TODO filter non-self assignments.
                     yield name
 

jedi/evaluate/context/klass.py

@@ -109,7 +109,7 @@ class ClassFilter(ParserTreeFilter):
             node = get_cached_parent_scope(self._used_names, node)
         return False
 
-    def _access_possible(self, name, from_instance):
+    def _access_possible(self, name, from_instance=False):
         # Filter for ClassVar variables
         # TODO this is not properly done, yet. It just checks for the string
         # ClassVar in the annotation, which can be quite imprecise. If we
@@ -212,6 +212,7 @@ class ClassMixin(object):
         if not is_instance:
             from jedi.evaluate.compiled import builtin_from_name
             type_ = builtin_from_name(self.evaluator, u'type')
+            assert isinstance(type_, ClassContext)
             if type_ != self:
                 yield next(type_.get_filters())
 

jedi/evaluate/filters.py

@@ -77,7 +77,7 @@ class AbstractUsedNamesFilter(AbstractFilter):
     def get(self, name, **filter_kwargs):
         return self._convert_names(self._filter(
             _get_definition_names(self._used_names, name),
-            **filter_kwargs,
+            **filter_kwargs
         ))
 
     def _convert_names(self, names):
@@ -89,7 +89,7 @@ class AbstractUsedNamesFilter(AbstractFilter):
             for name_key in self._used_names
             for name in self._filter(
                 _get_definition_names(self._used_names, name_key),
-                **filter_kwargs,
+                **filter_kwargs
             )
         )