Issue #18200: Update the stdlib (except tests) to use
ModuleNotFoundError.
diff --git a/Lib/http/server.py b/Lib/http/server.py
index e47e034..48e3f97 100644
--- a/Lib/http/server.py
+++ b/Lib/http/server.py
@@ -904,7 +904,7 @@
         return nobody
     try:
         import pwd
-    except ImportError:
+    except ModuleNotFoundError:
         return -1
     try:
         nobody = pwd.getpwnam('nobody')[2]