diff -r c02818d7e29f -r 7e61baa047f0 util/Zeroconf.py
--- a/util/Zeroconf.py	Mon Aug 14 22:30:41 2017 +0300
+++ b/util/Zeroconf.py	Mon Aug 14 23:27:15 2017 +0300
@@ -183,29 +183,36 @@
 
 # utility functions
 
+
 def currentTimeMillis():
     """Current system time in milliseconds"""
     return time.time() * 1000
 
 # Exceptions
 
+
 class NonLocalNameException(Exception):
     pass
 
+
 class NonUniqueNameException(Exception):
     pass
 
+
 class NamePartTooLongException(Exception):
     pass
 
+
 class AbstractMethodException(Exception):
     pass
 
+
 class BadTypeInNameException(Exception):
     pass
 
 # implementation classes
 
+
 class DNSEntry(object):
     """A DNS entry"""
 
@@ -254,6 +261,7 @@
             result += "]"
         return result
 
+
 class DNSQuestion(DNSEntry):
     """A DNS question entry"""
 
@@ -332,6 +340,7 @@
         arg = "%s/%s,%s" % (self.ttl, self.getRemainingTTL(currentTimeMillis()), other)
         return DNSEntry.toString(self, "record", arg)
 
+
 class DNSAddress(DNSRecord):
     """A DNS address record"""
 
@@ -356,6 +365,7 @@
         except:
             return self.address
 
+
 class DNSHinfo(DNSRecord):
     """A DNS host information record"""
 
@@ -379,6 +389,7 @@
         """String representation"""
         return self.cpu + " " + self.os
 
+
 class DNSPointer(DNSRecord):
     """A DNS pointer record"""
 
@@ -400,6 +411,7 @@
         """String representation"""
         return self.toString(self.alias)
 
+
 class DNSText(DNSRecord):
     """A DNS text record"""
 
@@ -424,6 +436,7 @@
         else:
             return self.toString(self.text)
 
+
 class DNSService(DNSRecord):
     """A DNS service record"""
 
@@ -451,6 +464,7 @@
         """String representation"""
         return self.toString("%s:%s" % (self.server, self.port))
 
+
 class DNSIncoming(object):
     """Object representation of an incoming DNS packet"""
 
@@ -890,6 +904,7 @@
         self.condition.notify()
         self.condition.release()
 
+
 class Listener(object):
     """A Listener is used by this module to listen on the multicast
     group to which DNS messages are sent, allowing the implementation