heat: minor fixes, don't use len > 0 and use next

instead of [0]

Change-Id: I1785b7ca3543a8d44eb68de61f4f29063a9c61c7
Signed-off-by: Ross Brattain <ross.b.brattain@intel.com>

diff --git a/yardstick/benchmark/contexts/heat.py b/yardstick/benchmark/contexts/heat.py
index 0b2fbdc..a9d9e5f 100644 (file)
--- a/yardstick/benchmark/contexts/heat.py
+++ b/yardstick/benchmark/contexts/heat.py
@@ -220,9 +220,9 @@ class HeatContext(Context):
 
         # copy some vital stack output into server objects
         for server in self.servers:
-            if len(server.ports) > 0:
+            if server.ports:
                 # TODO(hafe) can only handle one internal network for now
-                port = list(server.ports.values())[0]
+                port = next(iter(server.ports.values()))
                 server.private_ip = self.stack.outputs[port["stack_name"]]
 
             if server.floating_ip: