Hello TYPE_CHECKING!

1 files changed, 2 insertions, 3 deletions

diff --git a/sphinx/util/docutils.py b/sphinx/util/docutils.py
index 32b90a332..f211b5d0d 100644
--- a/sphinx/util/docutils.py
+++ b/sphinx/util/docutils.py
@@ -16,7 +16,7 @@ from distutils.version import LooseVersion
 from os import path
 from types import ModuleType
 from typing import Any, Callable, Dict, Generator, IO, List, Optional, Set, Tuple, Type
-from typing import cast
+from typing import TYPE_CHECKING, cast
 
 import docutils
 from docutils import nodes
@@ -34,8 +34,7 @@ from sphinx.util.typing import RoleFunction
 logger = logging.getLogger(__name__)
 report_re = re.compile('^(.+?:(?:\\d+)?): \\((DEBUG|INFO|WARNING|ERROR|SEVERE)/(\\d+)?\\) ')
 
-if False:
-    # For type annotation
+if TYPE_CHECKING:
     from sphinx.builders import Builder
     from sphinx.config import Config
     from sphinx.environment import BuildEnvironment