diff -r e945fcb54cd4 -r 2a3d022a7dac etherlab/etherlab.py
--- a/etherlab/etherlab.py	Fri Sep 28 18:00:50 2018 +0300
+++ b/etherlab/etherlab.py	Fri Sep 28 18:04:28 2018 +0300
@@ -34,9 +34,11 @@
 EtherCATInfoParser = GenerateParserFromXSD(os.path.join(os.path.dirname(__file__), "EtherCATInfo.xsd"))
 EtherCATInfo_XPath = lambda xpath: etree.XPath(xpath)
 
+
 def HexDecValue(context, *args):
     return str(ExtractHexDecValue(args[0][0]))
 
+
 def EntryName(context, *args):
     return ExtractName(args[0],
         args[1][0] if len(args) > 1 else None)
@@ -53,6 +55,7 @@
     ("PDO name", str, ""),
     ("PDO type", str, "")]
 
+
 class EntryListFactory:
 
     def __init__(self, entries):
@@ -128,6 +131,7 @@
         return sync_managers
     setattr(cls, "GetSyncManagers", GetSyncManagers)
 
+
 def GroupItemCompare(x, y):
     if x["type"] == y["type"]:
         if x["type"] == ETHERCAT_GROUP:
@@ -138,12 +142,14 @@
         return -1
     return 1
 
+
 def SortGroupItems(group):
     for item in group["children"]:
         if item["type"] == ETHERCAT_GROUP:
             SortGroupItems(item)
     group["children"].sort(GroupItemCompare)
 
+
 class ModulesLibrary:
 
     MODULES_EXTRA_PARAMS = [
@@ -384,6 +390,7 @@
 ModulesDatabase = ModulesLibrary(
     os.path.join(USERDATA_DIR, "ethercat_modules"))
 
+
 class RootClass:
 
     CTNChildrenTypes = [("EthercatNode",_EthercatCTN,"Ethercat Master")]