diff -r 31e63e25b4cc -r 64beb9e9c749 runtime/ServicePublisher.py
--- a/runtime/ServicePublisher.py	Mon Aug 21 20:17:19 2017 +0000
+++ b/runtime/ServicePublisher.py	Mon Aug 21 23:22:58 2017 +0300
@@ -21,33 +21,35 @@
 # License along with this library; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 
-import socket, threading
+import socket
+import threading
 from util import Zeroconf
 
 service_type = '_PYRO._tcp.local.'
 
+
 class ServicePublisher():
     def __init__(self):
         # type: fully qualified service type name
-        self.serviceproperties = {'description':'Beremiz remote PLC'}
-        
+        self.serviceproperties = {'description': 'Beremiz remote PLC'}
+
         self.name = None
         self.ip_32b = None
         self.port = None
         self.server = None
         self.service_name = None
         self.retrytimer = None
-        
+
     def RegisterService(self, name, ip, port):
         try:
             self._RegisterService(name, ip, port)
-        except Exception,e:
-            self.retrytimer = threading.Timer(2,self.RegisterService,[name, ip, port])
-            self.retrytimer.start() 
+        except Exception, e:
+            self.retrytimer = threading.Timer(2, self.RegisterService, [name, ip, port])
+            self.retrytimer.start()
 
     def _RegisterService(self, name, ip, port):
         # name: fully qualified service name
-        self.service_name = 'Beremiz_%s.%s'%(name,service_type)
+        self.service_name = 'Beremiz_%s.%s' % (name, service_type)
         self.name = name
         self.port = port
 
@@ -64,23 +66,23 @@
                                   self.service_name,
                                   self.ip_32b,
                                   self.port,
-                                  properties = self.serviceproperties))
-        self.retrytimer=None
-    
+                                  properties=self.serviceproperties))
+        self.retrytimer = None
+
     def UnRegisterService(self):
         if self.retrytimer is not None:
             self.retrytimer.cancel()
 
         self.server.unregisterService(
-                                      Zeroconf.ServiceInfo(service_type, 
-                                                           self.service_name, 
-                                                           self.ip_32b, 
-                                                           self.port, 
-                                                           properties = self.serviceproperties))
+                                      Zeroconf.ServiceInfo(service_type,
+                                                           self.service_name,
+                                                           self.ip_32b,
+                                                           self.port,
+                                                           properties=self.serviceproperties))
         self.server.close()
         self.server = None
-    
-    def gethostaddr(self, dst = '224.0.1.41'):
+
+    def gethostaddr(self, dst='224.0.1.41'):
         s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
         try:
             s.connect((dst, 7))
@@ -88,6 +90,6 @@
             s.close()
             if host != '0.0.0.0':
                 return host
-        except Exception,e:
+        except Exception, e:
             pass
         return socket.gethostbyname(socket.gethostname())