work on python 3 compatibility
diff --git a/serial/urlhandler/protocol_hwgrep.py b/serial/urlhandler/protocol_hwgrep.py
index 62cda43..7ce9dfe 100644
--- a/serial/urlhandler/protocol_hwgrep.py
+++ b/serial/urlhandler/protocol_hwgrep.py
@@ -41,5 +41,5 @@
     #~ s = Serial('hwgrep://ttyS0')
     s = Serial(None)
     s.port = 'hwgrep://ttyS0'
-    print s
+    print(s)