Issue #18200: Update the stdlib (except tests) to use
ModuleNotFoundError.
diff --git a/Lib/tempfile.py b/Lib/tempfile.py
index 10b6a1b..f2c3ccc 100644
--- a/Lib/tempfile.py
+++ b/Lib/tempfile.py
@@ -36,7 +36,7 @@
 
 try:
     import fcntl as _fcntl
-except ImportError:
+except ModuleNotFoundError:
     def _set_cloexec(fd):
         pass
 else:
@@ -53,7 +53,7 @@
 
 try:
     import _thread
-except ImportError:
+except ModuleNotFoundError:
     import _dummy_thread as _thread
 _allocate_lock = _thread.allocate_lock