Use typing.TYPE_CHECKING for typehints

1 files changed, 2 insertions, 2 deletions

diff --git a/sphinx/ext/autodoc/__init__.py b/sphinx/ext/autodoc/__init__.py
index 0f7231f7a..a02286c28 100644
--- a/sphinx/ext/autodoc/__init__.py
+++ b/sphinx/ext/autodoc/__init__.py
@@ -15,6 +15,7 @@ import inspect
 import re
 import sys
 import warnings
+from typing import TYPE_CHECKING
 
 from docutils.statemachine import ViewList
 from six import iteritems, itervalues, text_type, class_types, string_types
@@ -34,8 +35,7 @@ from sphinx.util.inspect import Signature, isdescriptor, safe_getmembers, \
     safe_getattr, object_description, is_builtin_class_method, \
     isenumattribute, isclassmethod, isstaticmethod, getdoc
 
-if False:
-    # For type annotation
+if TYPE_CHECKING:
     from types import ModuleType  # NOQA
     from typing import Any, Callable, Dict, Iterator, List, Sequence, Set, Tuple, Type, Union  # NOQA
     from docutils import nodes  # NOQA