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-rw-r--r--sphinx/ext/inheritance_diagram.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/sphinx/ext/inheritance_diagram.py b/sphinx/ext/inheritance_diagram.py
index 6f8256662..4420dfe05 100644
--- a/sphinx/ext/inheritance_diagram.py
+++ b/sphinx/ext/inheritance_diagram.py
@@ -40,6 +40,7 @@ import inspect
import re
import sys
from hashlib import md5
+from typing import TYPE_CHECKING
from docutils import nodes
from docutils.parsers.rst import Directive, directives
@@ -52,8 +53,7 @@ from sphinx.ext.graphviz import render_dot_html, render_dot_latex, \
from sphinx.pycode import ModuleAnalyzer
from sphinx.util import force_decode
-if False:
- # For type annotation
+if TYPE_CHECKING:
from typing import Any, Dict, List, Tuple, Dict, Optional # NOQA
from sphinx.application import Sphinx # NOQA
from sphinx.environment import BuildEnvironment # NOQA