diff --git a/.gitignore b/.gitignore
index 534a7100..ef1c1bea 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,6 +7,7 @@
 *_enterprise.*
 .settings/
 .ipynb_checkpoints
+.idea/
 
 # Debian buildings
 *.debhelper*
diff --git a/server/src/server/wsgi.py b/server/src/server/wsgi.py
index d4259b16..8d36428a 100644
--- a/server/src/server/wsgi.py
+++ b/server/src/server/wsgi.py
@@ -13,16 +13,22 @@ middleware here, or combine a Django application with an application of another
 framework.
 
 """
-import sys
-reload(sys)
-sys.setdefaultencoding('UTF-8')  # @UndefinedVariable
+from django.core.wsgi import get_wsgi_application
 
+import six
 import os
 
+if six.PY2:
+    import sys
+
+    # noinspection PyCompatibility
+    reload(sys)
+    sys.setdefaultencoding('UTF-8')  # @UndefinedVariable
+
+
 os.environ.setdefault("DJANGO_SETTINGS_MODULE", "server.settings")
 
 # This application object is used by any WSGI server configured to use this
 # file. This includes Django's development server, if the WSGI_APPLICATION
 # setting points here.
-from django.core.wsgi import get_wsgi_application
 application = get_wsgi_application()
diff --git a/server/src/sitecustomize.py b/server/src/sitecustomize.py
index 5eb7f50e..ba9788e0 100644
--- a/server/src/sitecustomize.py
+++ b/server/src/sitecustomize.py
@@ -1,4 +1,10 @@
-import sys
-reload(sys)
+import six
 
-sys.setdefaultencoding('utf-8')  # @UndefinedVariable
+if six.PY2:
+    import sys
+
+    # noinspection PyCompatibility
+    reload(sys)
+
+    # noinspection PyUnresolvedReferences
+    sys.setdefaultencoding('utf-8')  # @UndefinedVariable
diff --git a/server/src/uds/auths/RegexLdap/Authenticator.py b/server/src/uds/auths/RegexLdap/Authenticator.py
index a22c65b8..b51d3a67 100644
--- a/server/src/uds/auths/RegexLdap/Authenticator.py
+++ b/server/src/uds/auths/RegexLdap/Authenticator.py
@@ -150,7 +150,7 @@ class RegexLdap(auths.Authenticator):
         for line in field.splitlines():
             equalPos = line.find('=')
             if equalPos == -1:
-                line = line + '=(.*)'
+                line += '=(.*)'
                 equalPos = line.find('=')
             attr, pattern = (line[:equalPos], line[equalPos + 1:])
             attr = attr.lower()
diff --git a/server/src/uds/auths/Sample/SampleAuth.py b/server/src/uds/auths/Sample/SampleAuth.py
index 9b50ad15..c75844d6 100644
--- a/server/src/uds/auths/Sample/SampleAuth.py
+++ b/server/src/uds/auths/Sample/SampleAuth.py
@@ -305,4 +305,4 @@ class SampleAuth(auths.Authenticator):
         this this kind of things) modify the userName to a new one, the original plus '-1'
         '''
         usrData['real_name'] = usrData['name'] + ' ' + usrData['name']
-        usrData['name'] = usrData['name'] + '-1'
+        usrData['name'] += '-1'
diff --git a/server/src/uds/core/auths/BaseAuthenticator.py b/server/src/uds/core/auths/BaseAuthenticator.py
index 83b93242..35897640 100644
--- a/server/src/uds/core/auths/BaseAuthenticator.py
+++ b/server/src/uds/core/auths/BaseAuthenticator.py
@@ -197,7 +197,7 @@ class Authenticator(Module):
 
         user param is a database user object
         '''
-        if self.isExternalSource == True:
+        if self.isExternalSource:
             groupsManager = GroupsManager(self._dbAuth)
             self.getGroups(user.name, groupsManager)
             user.groups = [g.dbGroup() for g in groupsManager.getValidGroups()]
diff --git a/server/src/uds/core/services/ClusteredServiceProvider.py b/server/src/uds/core/services/ClusteredServiceProvider.py
index 22a8a9eb..01936493 100644
--- a/server/src/uds/core/services/ClusteredServiceProvider.py
+++ b/server/src/uds/core/services/ClusteredServiceProvider.py
@@ -35,6 +35,7 @@ from __future__ import unicode_literals
 from uds.core.services.BaseServiceProvider import ServiceProvider
 from uds.core.util.Config import GlobalConfig
 
+import six
 import logging
 
 __updated__ = '2016-02-26'
@@ -85,7 +86,7 @@ class ClusteredServiceProvider(ServiceProvider):
         maxCpuLoad = GlobalConfig.CLUSTER_MIGRATE_CPULOAD.getInt(True)
         minFreeMemPercent = GlobalConfig.CLUSTER_MIGRATE_MEMORYLOAD.getInt(True)
 
-        for nodeName, nodeStats in nodesStats.iteritems():
+        for nodeName, nodeStats in six.iteritems(nodesStats):
             if nodeStats['freeMemory'] is None or nodeStats['totalMemory'] is None or nodeStats['cpuLoad'] is None:
                 continue
             freeMemPercent = (nodeStats['freeMemory'] * 100) / nodeStats['totalMemory']
@@ -123,7 +124,7 @@ class ClusteredServiceProvider(ServiceProvider):
         maxCpuLoad = GlobalConfig.CLUSTER_ELEGIBLE_CPULOAD.getInt(True)
         minFreeMemPercent = GlobalConfig.CLUSTER_ELEGIBLE_MEMORYLOAD.getInt(True)
 
-        for nodeName, nodeStats in nodesStats.iteritems():
+        for nodeName, nodeStats in six.iteritems(nodesStats):
             if nodeStats['freeMemory'] is None or nodeStats['totalMemory'] is None or nodeStats['cpuLoad'] is None:
                 continue
             freeMemPercent = (nodeStats['freeMemory'] * 100) / nodeStats['totalMemory']
@@ -144,7 +145,7 @@ class ClusteredServiceProvider(ServiceProvider):
     def getClusterBestNodeForDeploy(self):
 
         nodesStats = self.clusterStats()
-        nodes = [name for name in nodesStats.iterkeys()]
+        nodes = [name for name in six.iteritems(nodesStats)]
 
         def getNodeStatsKey(name):
             ns = nodesStats[name]
diff --git a/server/src/uds/core/util/FileStorage.py b/server/src/uds/core/util/FileStorage.py
index 38f3633d..382f3e34 100644
--- a/server/src/uds/core/util/FileStorage.py
+++ b/server/src/uds/core/util/FileStorage.py
@@ -71,9 +71,9 @@ class FileStorage(Storage):
 
         self.cache._cache.flush_all()  # On start, ensures that cache is empty to avoid surprises
 
+        # noinspection PyArgumentList
         Storage.__init__(self, *args, **kwargs)
 
-
     def get_valid_name(self, name):
         return name.replace('\\', os.path.sep)
 
diff --git a/server/src/uds/core/util/decorators.py b/server/src/uds/core/util/decorators.py
index 0fc8e7b5..ef1dad60 100644
--- a/server/src/uds/core/util/decorators.py
+++ b/server/src/uds/core/util/decorators.py
@@ -46,11 +46,15 @@ logger = logging.getLogger(__name__)
 
 # Decorator that protects pages that needs at least a browser version
 # Default is to deny IE < 9
-def denyBrowsers(browsers=['ie<9'], errorResponse=lambda request: errors.errorView(request, errors.BROWSER_NOT_SUPPORTED)):
+def denyBrowsers(browsers=None, errorResponse=lambda request: errors.errorView(request, errors.BROWSER_NOT_SUPPORTED)):
     '''
     Decorator to set protection to access page
     Look for samples at uds.core.web.views
     '''
+
+    if browsers is None:
+        browsers = ['ie<9']
+
     def wrap(view_func):
         @wraps(view_func)
         def _wrapped_view(request, *args, **kwargs):
diff --git a/server/src/uds/core/util/net.py b/server/src/uds/core/util/net.py
index 56609638..8c06f1d1 100644
--- a/server/src/uds/core/util/net.py
+++ b/server/src/uds/core/util/net.py
@@ -64,7 +64,7 @@ def longToIp(n):
         while d > 0:
             m, n = divmod(n, d)
             q.append(str(m))
-            d = d / 256
+            d /= 256
 
         return '.'.join(q)
     except:
diff --git a/server/src/uds/core/workers/ClusteredProviderManagement.py b/server/src/uds/core/workers/ClusteredProviderManagement.py
index 479e3d2a..b854767d 100644
--- a/server/src/uds/core/workers/ClusteredProviderManagement.py
+++ b/server/src/uds/core/workers/ClusteredProviderManagement.py
@@ -165,9 +165,9 @@ class ClusterMigrationTask(DelayedTask):
             logger.debug("uService instance class: {0}".format(ci.__class__))
             state = ci.checkState()
             ClusterMigrationTask.checkAndUpdateState(uService, ci, state)
-        except UserService.DoesNotExist, e:
+        except UserService.DoesNotExist as e:
             logger.error('User service not found (erased from database?) {0} : {1}'.format(e.__class__, e))
-        except Exception, e:
+        except Exception as e:
             # Exception caught, mark service as errored
             logger.exception("Error {0}, {1} :".format(e.__class__, e))
             if uService is not None:
diff --git a/server/src/uds/core/workers/DeployedServiceCleaner.py b/server/src/uds/core/workers/DeployedServiceCleaner.py
index 493f2e1c..d3987181 100644
--- a/server/src/uds/core/workers/DeployedServiceCleaner.py
+++ b/server/src/uds/core/workers/DeployedServiceCleaner.py
@@ -83,7 +83,7 @@ class DeployedServiceRemover(Job):
             u.cancel()
         # Nice start of removal, maybe we need to do some limitation later, but there should not be too much services nor publications cancelable at once
         ds.state = State.REMOVING
-        ds.name = ds.name + ' (removed)'
+        ds.name += ' (removed)'
         ds.save()
 
     def continueRemovalOf(self, ds):
diff --git a/server/src/uds/dispatchers/guacamole/views.py b/server/src/uds/dispatchers/guacamole/views.py
index 309a5fc4..c947315e 100644
--- a/server/src/uds/dispatchers/guacamole/views.py
+++ b/server/src/uds/dispatchers/guacamole/views.py
@@ -34,9 +34,9 @@ from __future__ import unicode_literals
 
 from django.http import HttpResponse
 from uds.models import TicketStore
-from uds.core.util import net
 from uds.core.auths import auth
 
+import six
 import logging
 
 logger = logging.getLogger(__name__)
@@ -48,7 +48,7 @@ CONTENT_TYPE = 'text/plain'
 
 
 def dict2resp(dct):
-    return '\r'.join((k + '\t' + v for k, v in dct.iteritems()))
+    return '\r'.join((k + '\t' + v for k, v in six.iteritems(dct)))
 
 
 @auth.trustedSourceRequired
diff --git a/server/src/uds/osmanagers/WindowsOsManager/WindowsOsManager.py b/server/src/uds/osmanagers/WindowsOsManager/WindowsOsManager.py
index 2346236a..ace62dc9 100644
--- a/server/src/uds/osmanagers/WindowsOsManager/WindowsOsManager.py
+++ b/server/src/uds/osmanagers/WindowsOsManager/WindowsOsManager.py
@@ -225,8 +225,8 @@ class WindowsOsManager(osmanagers.OSManager):
                 'password': password,
                 'domain': domain
             }
-            ticket = TicketStore.create(creds, validator=None, validity=300, owner=SECURE_OWNER, secure=True)
-            return (ticket, '')
+            ticket = TicketStore.create(creds, validator=None, validity=300)  # , owner=SECURE_OWNER, secure=True)
+            return ticket, ''
         else:
             return osmanagers.OSManager.processUserPassword(self, service, username, password)
 
diff --git a/server/src/uds/reports/lists/base.py b/server/src/uds/reports/lists/base.py
index 7d5b807a..19240b27 100644
--- a/server/src/uds/reports/lists/base.py
+++ b/server/src/uds/reports/lists/base.py
@@ -39,4 +39,7 @@ __updated__ = '2015-06-21'
 
 
 class ListReport(reports.Report):
+    def generate(self):
+        raise NotImplementedError('ListReport generate invoked and not implemented')
+
     group = _('Lists')  # So we can make submenus with reports
diff --git a/server/src/uds/services/OpenNebula/on/__init__.py b/server/src/uds/services/OpenNebula/on/__init__.py
index 2b1e683d..6f5cc63a 100644
--- a/server/src/uds/services/OpenNebula/on/__init__.py
+++ b/server/src/uds/services/OpenNebula/on/__init__.py
@@ -64,6 +64,7 @@ from . import template
 from . import vm
 from . import storage
 
+
 # Decorator
 def ensureConnected(fnc):
     def inner(*args, **kwargs):
@@ -71,19 +72,22 @@ def ensureConnected(fnc):
         return fnc(*args, **kwargs)
     return inner
 
+
 # Result checker
 def checkResult(lst, parseResult=True):
-    if lst[0] == False:
+    if not lst[0]:
         raise Exception('OpenNebula error {}: "{}"'.format(lst[2], lst[1]))
     if parseResult:
         return xml2dict.parse(lst[1])
     else:
         return lst[1]
 
+
 def asList(element):
     if isinstance(element, (tuple, list)):
         return element
-    return (element,)
+    return element,
+
 
 class OpenNebulaClient(object):
     def __init__(self, username, password, endpoint):
diff --git a/server/src/uds/services/OpenStack/openStack/UDSOpenStackClient.py b/server/src/uds/services/OpenStack/openStack/UDSOpenStackClient.py
index 4d53c9e3..3ed9d32f 100644
--- a/server/src/uds/services/OpenStack/openStack/UDSOpenStackClient.py
+++ b/server/src/uds/services/OpenStack/openStack/UDSOpenStackClient.py
@@ -65,7 +65,7 @@ def ensureResponseIsValid(response, errMsg=None):
     if response.ok is False:
         try:
             _x, err = response.json().popitem()  # Extract any key, in case of error is expected to have only one top key so this will work
-            errMsg = errMsg + ': {message}'.format(**err)
+            errMsg += ': {message}'.format(**err)
         except Exception:
             pass  # If error geting error message, simply ignore it (will be loged on service log anyway)
         if errMsg is None:
diff --git a/server/src/uds/services/Xen/XenProvider.py b/server/src/uds/services/Xen/XenProvider.py
index cd813a5c..3ebbe009 100644
--- a/server/src/uds/services/Xen/XenProvider.py
+++ b/server/src/uds/services/Xen/XenProvider.py
@@ -37,13 +37,14 @@ from django.utils.translation import ugettext_noop as _
 from uds.core.util.State import State
 from uds.core.services import ServiceProvider
 from uds.core.ui import gui
-from uds.core.util import validators
+# from uds.core.util import validators
 
 from xen_client import XenServer
-from xen_client import XenFailure, XenFault
+# from xen_client import XenFailure, XenFault
 
 from XenLinkedService import XenLinkedService
 
+import six
 import logging
 
 logger = logging.getLogger(__name__)
@@ -395,4 +396,4 @@ class Provider(ServiceProvider):
             xe.testConnection()
             return [True, _('Connection test successful')]
         except Exception as e:
-            return [False, _("Connection failed: {0}").format(unicode(e))]
+            return [False, _("Connection failed: {0}").format(six.text_type(e))]
diff --git a/server/src/uds/transports/NX/NXPassword.py b/server/src/uds/transports/NX/NXPassword.py
index 8013759e..ddf2b08e 100644
--- a/server/src/uds/transports/NX/NXPassword.py
+++ b/server/src/uds/transports/NX/NXPassword.py
@@ -68,7 +68,6 @@ class NXPassword(object):
         for i in range(len(p)):
             sPass += '{}:'.format(ord(p[i]) + i + 1)
 
-        print sPass
         return sPass
 
     @staticmethod
diff --git a/server/src/uds/transports/NX/NXTransport.py b/server/src/uds/transports/NX/NXTransport.py
index c6b71342..a31a94c5 100644
--- a/server/src/uds/transports/NX/NXTransport.py
+++ b/server/src/uds/transports/NX/NXTransport.py
@@ -200,6 +200,6 @@ class NXTransport(Transport):
         }.get(os['OS'])
 
         if os is None:
-            return super(NXTransport, self).getUDSTransportScript(self, userService, transport, ip, os, user, password, request)
+            return super(self.__class__, self).getUDSTransportScript(userService, transport, ip, os, user, password, request)
 
         return self.getScript('scripts/{}/direct.py'.format(os)).format(r=r)
diff --git a/server/src/uds/transports/NX/TSNXTransport.py b/server/src/uds/transports/NX/TSNXTransport.py
index 2d9b5e0e..453ff7b0 100644
--- a/server/src/uds/transports/NX/TSNXTransport.py
+++ b/server/src/uds/transports/NX/TSNXTransport.py
@@ -236,7 +236,7 @@ class TSNXTransport(Transport):
         }.get(os['OS'])
 
         if os is None:
-            return super(TSNXTransport, self).getUDSTransportScript(self, userService, transport, ip, os, user, password, request)
+            return super(self.__class__, self).getUDSTransportScript(userService, transport, ip, os, user, password, request)
 
         return self.getScript('scripts/{}/tunnel.py'.format(os)).format(
             r=r,
diff --git a/server/src/uds/transports/RDP/RDPTransport.py b/server/src/uds/transports/RDP/RDPTransport.py
index 8d425723..f8c779f1 100644
--- a/server/src/uds/transports/RDP/RDPTransport.py
+++ b/server/src/uds/transports/RDP/RDPTransport.py
@@ -145,6 +145,6 @@ class RDPTransport(BaseRDPTransport):
         }.get(m.os)
 
         if os is None:
-            return super(RDPTransport, self).getUDSTransportScript(self, userService, transport, ip, os, user, password, request)
+            return super(self.__class__, self).getUDSTransportScript(userService, transport, ip, os, user, password, request)
 
         return self.getScript('scripts/{}/direct.py'.format(os)).format(m=m)
diff --git a/server/src/uds/transports/RDP/TRDPTransport.py b/server/src/uds/transports/RDP/TRDPTransport.py
index ee236cd8..d2a4b9da 100644
--- a/server/src/uds/transports/RDP/TRDPTransport.py
+++ b/server/src/uds/transports/RDP/TRDPTransport.py
@@ -179,6 +179,6 @@ class TRDPTransport(BaseRDPTransport):
         }.get(m.os)
 
         if os is None:
-            return super(TRDPTransport, self).getUDSTransportScript(self, userService, transport, ip, os, user, password, request)
+            return super(self.__class__, self).getUDSTransportScript(userService, transport, ip, os, user, password, request)
 
         return self.getScript('scripts/{}/tunnel.py'.format(os)).format(m=m)
diff --git a/server/src/uds/transports/SPICE/SPICETransport.py b/server/src/uds/transports/SPICE/SPICETransport.py
index ede57d15..4d84f4c2 100644
--- a/server/src/uds/transports/SPICE/SPICETransport.py
+++ b/server/src/uds/transports/SPICE/SPICETransport.py
@@ -83,6 +83,6 @@ class SPICETransport(BaseSpiceTransport):
         }.get(os.OS)
 
         if os is None:
-            return super(SPICETransport, self).getUDSTransportScript(self, userService, transport, ip, os, user, password, request)
+            return super(self.__class__, self).getUDSTransportScript(userService, transport, ip, os, user, password, request)
 
         return self.getScript('scripts/{}/direct.py'.format(os)).format(m=m)
diff --git a/server/src/uds/transports/SPICE/TSPICETransport.py b/server/src/uds/transports/SPICE/TSPICETransport.py
index 9d7b3b85..5119cbd4 100644
--- a/server/src/uds/transports/SPICE/TSPICETransport.py
+++ b/server/src/uds/transports/SPICE/TSPICETransport.py
@@ -108,6 +108,6 @@ class TSPICETransport(BaseSpiceTransport):
         }.get(os.OS)
 
         if os is None:
-            return super(TSPICETransport, self).getUDSTransportScript(self, userService, transport, ip, os, user, password, request)
+            return super(self.__class__, self).getUDSTransportScript(userService, transport, ip, os, user, password, request)
 
         return self.getScript('scripts/{}/tunnel.py'.format(os)).format(m=m)
diff --git a/server/src/uds/transports/X2GO/TX2GOTransport.py b/server/src/uds/transports/X2GO/TX2GOTransport.py
index 1d8ce0d4..b6c3b16f 100644
--- a/server/src/uds/transports/X2GO/TX2GOTransport.py
+++ b/server/src/uds/transports/X2GO/TX2GOTransport.py
@@ -140,6 +140,6 @@ class TX2GOTransport(BaseX2GOTransport):
         }.get(m.os)
 
         if os is None:
-            return super(BaseX2GOTransport, self).getUDSTransportScript(self, userService, transport, ip, os, user, password, request)
+            return super(self.__class__, self).getUDSTransportScript(userService, transport, ip, os, user, password, request)
 
         return self.getScript('scripts/{}/tunnel.py'.format(os)).format(m=m)
diff --git a/server/src/uds/transports/X2GO/X2GOTransport.py b/server/src/uds/transports/X2GO/X2GOTransport.py
index 6c223d06..1d21886f 100644
--- a/server/src/uds/transports/X2GO/X2GOTransport.py
+++ b/server/src/uds/transports/X2GO/X2GOTransport.py
@@ -38,6 +38,7 @@ from uds.core.util import tools
 from .BaseX2GOTransport import BaseX2GOTransport
 from . import x2gofile
 
+import six
 import logging
 
 __updated__ = '2017-01-30'
@@ -113,6 +114,6 @@ class X2GOTransport(BaseX2GOTransport):
         }.get(m.os)
 
         if os is None:
-            return super(X2GOTransport, self).getUDSTransportScript(self, userService, transport, ip, os, user, password, request)
+            return super(self.__class__, self).getUDSTransportScript(userService, transport, ip, os, user, password, request)
 
         return self.getScript('scripts/{}/direct.py'.format(os)).format(m=m)
diff --git a/server/src/uds/transports/X2GO/scripts/authorize.py b/server/src/uds/transports/X2GO/scripts/authorize.py
index c3be0e8a..a3d38daa 100644
--- a/server/src/uds/transports/X2GO/scripts/authorize.py
+++ b/server/src/uds/transports/X2GO/scripts/authorize.py
@@ -29,7 +29,7 @@ def updateAuthorizedKeys(user, pubKey):
     sshFolder = '{}/.ssh'.format(home)
     if not os.path.exists(sshFolder):
         try:
-            os.makedirs(sshFolder, 0700)
+            os.makedirs(sshFolder, 0o0700)
             os.chown(sshFolder, uid, -1)
         except OSError as e:
             if e.errno != errno.EEXIST:
@@ -53,7 +53,7 @@ def updateAuthorizedKeys(user, pubKey):
 
     # Ensure access is correct
     os.chown(authorizedKeys, uid, -1)
-    os.chmod(authorizedKeys, 0600)
+    os.chmod(authorizedKeys, 0o0600)
 
     # Done
 
diff --git a/server/src/uds/web/errors.py b/server/src/uds/web/errors.py
index e9c56fa0..914e977e 100644
--- a/server/src/uds/web/errors.py
+++ b/server/src/uds/web/errors.py
@@ -33,7 +33,7 @@
 from __future__ import unicode_literals
 
 from django.utils.translation import ugettext_lazy as _
-from django.shortcuts import render_to_response
+from django.shortcuts import render
 from django.template import RequestContext
 
 from django.http import HttpResponseRedirect
@@ -148,4 +148,4 @@ def error(request, idError):
     if code != 0:
         errStr += ' (code {0:04X})'.format(code)
 
-    return render_to_response(theme.template('error.html'), {'errorString': errStr}, context_instance=RequestContext(request))
+    return render(request, theme.template('error.html'), {'errorString': errStr})
diff --git a/server/src/uds/web/views/index.py b/server/src/uds/web/views/index.py
index c4eec363..1f86ec22 100644
--- a/server/src/uds/web/views/index.py
+++ b/server/src/uds/web/views/index.py
@@ -75,7 +75,7 @@ def index(request):
     :param request: http request
     '''
     if request.session.get('ticket') == '1':
-        return webLogout()
+        return webLogout(request)
 
     # Session data
     os = request.os
@@ -222,7 +222,8 @@ def index(request):
 
     logger.debug('Groups: {}'.format(groups))
 
-    response = render(request,
+    response = render(
+        request,
         theme.template('index.html'),
         {
             'groups': groups,