Merge branch 'project'

jedi/api/classes.py

@@ -707,6 +707,16 @@ class Definition(BaseDefinition):
         else:
             return self._name.tree_name.is_definition()
 
+    def is_side_effect(self):
+        """
+        Checks if a name is defined as ``self.foo = 3``. In case of self, this
+        function would return False, for foo it would return True.
+        """
+        tree_name = self._name.tree_name
+        if tree_name is None:
+            return False
+        return tree_name.is_definition() and tree_name.parent.type == 'trailer'
+
     def __eq__(self, other):
         return self._name.start_pos == other._name.start_pos \
             and self.module_path == other.module_path \