Update lib: Tornado

libs/tornado/util.py

@@ -311,6 +311,11 @@ class ArgReplacer(object):
         return old_value, args, kwargs
 
 
+def timedelta_to_seconds(td):
+    """Equivalent to td.total_seconds() (introduced in python 2.7)."""
+    return (td.microseconds + (td.seconds + td.days * 24 * 3600) * 10 ** 6) / float(10 ** 6)
+
+
 def _websocket_mask_python(mask, data):
     """Websocket masking function.