Rename thread to _thread and dummy_thread to _dummy_thread. Issue #2875.
diff --git a/Demo/threads/find.py b/Demo/threads/find.py
index 57fe81e..2b4ef7d 100644
--- a/Demo/threads/find.py
+++ b/Demo/threads/find.py
@@ -20,7 +20,7 @@
 import time
 import os
 from stat import *
-import thread
+import _thread as thread
 
 
 # Work queue class.  Usage: