diff --git a/Lib/test/regrtest.py b/Lib/test/regrtest.py
index 2b8a6a7..75a74fa 100755
--- a/Lib/test/regrtest.py
+++ b/Lib/test/regrtest.py
@@ -996,6 +996,12 @@
             obj._abc_cache.clear()
             obj._abc_negative_cache.clear()
 
+    # Flush standard output, so that buffered data is sent to the OS and
+    # associated Python objects are reclaimed.
+    for stream in (sys.stdout, sys.stderr, sys.__stdout__, sys.__stderr__):
+        if stream is not None:
+            stream.flush()
+
     # Clear assorted module caches.
     _path_created.clear()
     re.purge()
diff --git a/Lib/test/test_uuid.py b/Lib/test/test_uuid.py
index b4dd459..b749abc 100644
--- a/Lib/test/test_uuid.py
+++ b/Lib/test/test_uuid.py
@@ -314,7 +314,6 @@
         import sys
         print("""    WARNING: uuid._ifconfig_getnode is unreliable on many platforms.
         It is disabled until the code and/or test can be fixed properly.""", file=sys.__stdout__)
-        sys.__stdout__.flush()
         return
 
         import os
@@ -343,7 +342,6 @@
         import sys
         print("""    WARNING: uuid._unixdll_getnode is unreliable on many platforms.
         It is disabled until the code and/or test can be fixed properly.""", file=sys.__stdout__)
-        sys.__stdout__.flush()
         return
 
         import os
@@ -359,7 +357,6 @@
         import sys
         print("""    WARNING: uuid.getnode is unreliable on many platforms.
         It is disabled until the code and/or test can be fixed properly.""", file=sys.__stdout__)
-        sys.__stdout__.flush()
         return
 
         node1 = uuid.getnode()