bpo-38539: Update demo files (GH-16890)

diff --git a/Tools/demo/rpythond.py b/Tools/demo/rpythond.py
index a885b3e..a18de13 100755
--- a/Tools/demo/rpythond.py
+++ b/Tools/demo/rpythond.py
@@ -29,7 +29,7 @@
         with conn:
             print('connection from', remotehost, remoteport)
             request = b''
-            while 1:
+            while True:
                 data = conn.recv(BUFSIZE)
                 if not data:
                     break