Use typing.TYPE_CHECKING for typehints

1 files changed, 2 insertions, 2 deletions

diff --git a/sphinx/application.py b/sphinx/application.py
index 0305f7560..1495d6eaf 100644
--- a/sphinx/application.py
+++ b/sphinx/application.py
@@ -18,6 +18,7 @@ import sys
 import warnings
 from collections import deque
 from os import path
+from typing import TYPE_CHECKING
 
 from docutils import nodes
 from docutils.parsers.rst import directives, roles
@@ -43,8 +44,7 @@ from sphinx.util.i18n import find_catalog_source_files
 from sphinx.util.osutil import ENOENT, ensuredir
 from sphinx.util.tags import Tags
 
-if False:
-    # For type annotation
+if TYPE_CHECKING:
     from typing import Any, Callable, Dict, IO, Iterable, Iterator, List, Tuple, Type, Union  # NOQA
     from docutils.parsers import Parser  # NOQA
     from docutils.transform import Transform  # NOQA