fix

power.py

@@ -33,7 +33,7 @@ def monitor_ups(logger):
     client = PyNUTClient()
     try:
         ups_status = client.list_vars('ups')
-        return{
+        return {
             ups_status.get('ups.status'),
             'battery_charge': float(ups_status.get('battery.charge'))
             }