refactor: Add Optional to type annotations

1 files changed, 3 insertions, 3 deletions

diff --git a/sphinx/domains/python.py b/sphinx/domains/python.py
index 4464895ef..dbe2c87ca 100644
--- a/sphinx/domains/python.py
+++ b/sphinx/domains/python.py
@@ -15,7 +15,7 @@ import sys
 import typing
 import warnings
 from inspect import Parameter
-from typing import Any, Dict, Iterable, Iterator, List, NamedTuple, Tuple, Type, cast
+from typing import Any, Dict, Iterable, Iterator, List, NamedTuple, Optional, Tuple, Type, cast
 
 from docutils import nodes
 from docutils.nodes import Element, Node
@@ -1246,7 +1246,7 @@ class PythonDomain(Domain):
 
     def resolve_xref(self, env: BuildEnvironment, fromdocname: str, builder: Builder,
                      type: str, target: str, node: pending_xref, contnode: Element
-                     ) -> Element:
+                     ) -> Optional[Element]:
         modname = node.get('py:module')
         clsname = node.get('py:class')
         searchmode = 1 if node.hasattr('refspecific') else 0
@@ -1340,7 +1340,7 @@ class PythonDomain(Domain):
                 else:
                     yield (refname, refname, obj.objtype, obj.docname, obj.node_id, 1)
 
-    def get_full_qualified_name(self, node: Element) -> str:
+    def get_full_qualified_name(self, node: Element) -> Optional[str]:
         modname = node.get('py:module')
         clsname = node.get('py:class')
         target = node.get('reftarget')