Use get_qualified_names for full_name

jedi/evaluate/context/function.py

@@ -45,9 +45,9 @@ class FunctionAndClassBase(TreeContext):
             if n is None:
                 # This means that the parent class lives within a function.
                 return None
-            return n + [self.py__name__()]
+            return n + (self.py__name__(),)
         elif self.parent_context.is_module():
-            return [self.py__name__()]
+            return (self.py__name__(),)
         else:
             return None
 
@@ -164,7 +164,7 @@ class MethodContext(FunctionContext):
         names = self.class_context.get_qualified_names()
         if names is None:
             return None
-        return names + [self.py__name__()]
+        return names + (self.py__name__(),)
 
 
 class FunctionExecutionContext(TreeContext):

jedi/evaluate/context/instance.py

@@ -73,6 +73,9 @@ class AbstractInstanceContext(Context):
     def is_instance(self):
         return True
 
+    def get_qualified_names(self):
+        return self.class_context.get_qualified_names()
+
     def get_annotated_class_object(self):
         return self.class_context  # This is the default.
 

jedi/evaluate/context/module.py

@@ -164,7 +164,7 @@ class ModuleMixin(SubModuleDictMixin):
         it's reachable and not `None`. With this information we can add
         qualified names on top for all context children.
         """
-        return []
+        return ()
 
 
 class ModuleContext(ModuleMixin, TreeContext):
@@ -182,7 +182,7 @@ class ModuleContext(ModuleMixin, TreeContext):
             self._path = None
         else:
             self._path = file_io.path
-        self.string_names = string_names
+        self.string_names = string_names  # Optional[Tuple[str, ...]]
         self.code_lines = code_lines
         self.is_package = is_package