Issue #18200: Update the stdlib (except tests) to use
ModuleNotFoundError.
diff --git a/Lib/http/client.py b/Lib/http/client.py
index 939615b..188f4f6 100644
--- a/Lib/http/client.py
+++ b/Lib/http/client.py
@@ -1156,7 +1156,7 @@
 
 try:
     import ssl
-except ImportError:
+except ModuleNotFoundError:
     pass
 else:
     class HTTPSConnection(HTTPConnection):
diff --git a/Lib/http/cookiejar.py b/Lib/http/cookiejar.py
index be828eb..fd40ee0 100644
--- a/Lib/http/cookiejar.py
+++ b/Lib/http/cookiejar.py
@@ -35,7 +35,7 @@
 import urllib.parse, urllib.request
 try:
     import threading as _threading
-except ImportError:
+except ModuleNotFoundError:
     import dummy_threading as _threading
 import http.client  # only for the default HTTP port
 from calendar import timegm
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]