diff --git a/slapos/tests/slap.py b/slapos/tests/slap.py
index 7809c2b5095c946cb7418a85e8ed50c1f67ab479..6f2f917a7968e09ffd81cd7715e3e2dd87e7447d 100644
--- a/slapos/tests/slap.py
+++ b/slapos/tests/slap.py
@@ -37,6 +37,7 @@ import xml_marshaller
 class UndefinedYetException(Exception):
   """To catch exceptions which are not yet defined"""
 
+
 class SlapMixin(unittest.TestCase):
   """
   Usefull methods for slap tests
@@ -59,7 +60,7 @@ class SlapMixin(unittest.TestCase):
     """Overrides httplib"""
     import mock.httplib
 
-    self.saved_httplib = dict()
+    self.saved_httplib = {}
 
     for fake in vars(mock.httplib):
       self.saved_httplib[fake] = getattr(httplib, fake, None)
@@ -79,6 +80,7 @@ class SlapMixin(unittest.TestCase):
     return self.id()
     return os.environ.get('TEST_SLAP_COMPUTER_ID', self.id())
 
+
 class TestSlap(SlapMixin):
   """
   Test slap against slap server
@@ -102,7 +104,8 @@ class TestSlap(SlapMixin):
     server_url = 'https://user:pass@server/path/path?parameter=notAcceptable'
     slap_instance = slapos.slap.slap()
     self.assertRaises(AttributeError,
-                      slap_instance.initializeConnection, server_url)
+                      slap_instance.initializeConnection,
+                      server_url)
 
   def test_registerComputer_with_new_guid(self):
     """
@@ -169,9 +172,9 @@ class TestSlap(SlapMixin):
     def server_response(self, path, method, body, header):
       parsed_url = urlparse.urlparse(path.lstrip('/'))
       parsed_qs = urlparse.parse_qs(parsed_url.query)
-      if parsed_url.path == 'registerComputerPartition' and \
-         parsed_qs['computer_reference'][0] == computer_guid and \
-         parsed_qs['computer_partition_reference'][0] == partition_id:
+      if (parsed_url.path == 'registerComputerPartition'
+              and parsed_qs['computer_reference'][0] == computer_guid
+              and parsed_qs['computer_partition_reference'][0] == partition_id):
         partition = slapos.slap.ComputerPartition(
             computer_guid, partition_id)
         return (200, {}, xml_marshaller.xml_marshaller.dumps(partition))
@@ -189,7 +192,7 @@ class TestSlap(SlapMixin):
     """
     self.test_registerComputerPartition_new_partition_id_known_computer_guid()
     partition = self.slap.registerComputerPartition(self._getTestComputerId(),
-        self.partition_id)
+                                                    self.partition_id)
     self.assertIsInstance(partition, slapos.slap.ComputerPartition)
 
   def test_registerComputerPartition_unknown_computer_guid(self):
@@ -204,9 +207,9 @@ class TestSlap(SlapMixin):
     def server_response(self, path, method, body, header):
       parsed_url = urlparse.urlparse(path.lstrip('/'))
       parsed_qs = urlparse.parse_qs(parsed_url.query)
-      if parsed_url.path == 'registerComputerPartition' and \
-         parsed_qs['computer_reference'][0] == computer_guid and \
-         parsed_qs['computer_partition_reference'][0] == partition_id:
+      if (parsed_url.path == 'registerComputerPartition'
+              and parsed_qs['computer_reference'][0] == computer_guid
+              and parsed_qs['computer_partition_reference'][0] == partition_id):
         slapos.slap.ComputerPartition(computer_guid, partition_id)
         return (404, {}, '')
       else:
@@ -214,7 +217,8 @@ class TestSlap(SlapMixin):
     httplib.HTTPConnection._callback = server_response
 
     self.assertRaises(slapos.slap.NotFoundError,
-        self.slap.registerComputerPartition, computer_guid, partition_id)
+                      self.slap.registerComputerPartition,
+                      computer_guid, partition_id)
 
   def test_getFullComputerInformation_empty_computer_guid(self):
     """
@@ -226,11 +230,12 @@ class TestSlap(SlapMixin):
     def server_response(self_httpconnection, path, method, body, header):
       # Shouldn't even be called
       self.assertFalse(True)
+
     httplib.HTTPConnection._callback = server_response
 
-    self.assertRaises(
-        slapos.slap.NotFoundError,
-        self.slap._connection_helper.getFullComputerInformation, None)
+    self.assertRaises(slapos.slap.NotFoundError,
+                      self.slap._connection_helper.getFullComputerInformation,
+                      None)
 
   def test_registerComputerPartition_empty_computer_guid(self):
     """
@@ -242,11 +247,12 @@ class TestSlap(SlapMixin):
     def server_response(self_httpconnection, path, method, body, header):
       # Shouldn't even be called
       self.assertFalse(True)
+
     httplib.HTTPConnection._callback = server_response
 
-    self.assertRaises(
-        slapos.slap.NotFoundError,
-        self.slap.registerComputerPartition, None, 'PARTITION_01')
+    self.assertRaises(slapos.slap.NotFoundError,
+                      self.slap.registerComputerPartition,
+                      None, 'PARTITION_01')
 
   def test_registerComputerPartition_empty_computer_partition_id(self):
     """
@@ -258,12 +264,12 @@ class TestSlap(SlapMixin):
     def server_response(self_httpconnection, path, method, body, header):
       # Shouldn't even be called
       self.assertFalse(True)
+
     httplib.HTTPConnection._callback = server_response
 
-    self.assertRaises(
-        slapos.slap.NotFoundError,
-        self.slap.registerComputerPartition,
-        self._getTestComputerId(), None)
+    self.assertRaises(slapos.slap.NotFoundError,
+                      self.slap.registerComputerPartition,
+                      self._getTestComputerId(), None)
 
   def test_registerComputerPartition_empty_computer_guid_empty_computer_partition_id(self):
     """
@@ -275,12 +281,13 @@ class TestSlap(SlapMixin):
     def server_response(self_httpconnection, path, method, body, header):
       # Shouldn't even be called
       self.assertFalse(True)
+
     httplib.HTTPConnection._callback = server_response
 
-    self.assertRaises(
-        slapos.slap.NotFoundError,
-        self.slap.registerComputerPartition,
-        None, None)
+    self.assertRaises(slapos.slap.NotFoundError,
+                      self.slap.registerComputerPartition,
+                      None, None)
+
 
 class TestComputer(SlapMixin):
   """
@@ -299,15 +306,15 @@ class TestComputer(SlapMixin):
     def server_response(self, path, method, body, header):
       parsed_url = urlparse.urlparse(path.lstrip('/'))
       parsed_qs = urlparse.parse_qs(parsed_url.query)
-      if parsed_url.path == 'registerComputerPartition' and \
-         'computer_reference' in parsed_qs and \
-         'computer_partition_reference' in parsed_qs:
+      if (parsed_url.path == 'registerComputerPartition'
+              and 'computer_reference' in parsed_qs
+              and 'computer_partition_reference' in parsed_qs):
         slap_partition = slapos.slap.ComputerPartition(
-          parsed_qs['computer_reference'][0],
-          parsed_qs['computer_partition_reference'][0])
+            parsed_qs['computer_reference'][0],
+            parsed_qs['computer_partition_reference'][0])
         return (200, {}, xml_marshaller.xml_marshaller.dumps(slap_partition))
-      elif parsed_url.path == 'getFullComputerInformation' and \
-         'computer_id' in parsed_qs:
+      elif (parsed_url.path == 'getFullComputerInformation'
+              and 'computer_id' in parsed_qs):
         slap_computer = slapos.slap.Computer(parsed_qs['computer_id'][0])
         slap_computer._software_release_list = []
         slap_computer._computer_partition_list = []
@@ -331,12 +338,12 @@ class TestComputer(SlapMixin):
     def server_response(self_httpconnection, path, method, body, header):
       # Shouldn't even be called
       self.assertFalse(True)
+
     httplib.HTTPConnection._callback = server_response
 
     computer = self.slap.registerComputer(None)
-    self.assertRaises(
-        slapos.slap.NotFoundError,
-        getattr(computer, computer_method))
+    self.assertRaises(slapos.slap.NotFoundError,
+                      getattr(computer, computer_method))
 
   def test_computer_getComputerPartitionList_empty_computer_guid(self):
     """
@@ -363,7 +370,7 @@ class TestComputer(SlapMixin):
     self.slap.initializeConnection(self.server_url)
     self.computer = self.slap.registerComputer(self.computer_guid)
     self.partition = self.slap.registerComputerPartition(self.computer_guid,
-        partition_id)
+                                                         partition_id)
     self.assertEqual(self.computer.getComputerPartitionList(), [])
 
   @unittest.skip("Not implemented")
@@ -373,7 +380,6 @@ class TestComputer(SlapMixin):
     (not defined yet) XML raises (not defined yet) exception
     """
 
-
     self.computer_guid = self._getTestComputerId()
     self.slap = slapos.slap.slap()
     self.slap.initializeConnection(self.server_url)
@@ -381,8 +387,9 @@ class TestComputer(SlapMixin):
     non_dtd_xml = """<xml>
 <non-dtd-parameter name="xerxes">value<non-dtd-parameter name="xerxes">
 </xml>"""
-    self.assertRaises(UndefinedYetException, self.computer.reportUsage,
-        non_dtd_xml)
+    self.assertRaises(UndefinedYetException,
+                      self.computer.reportUsage,
+                      non_dtd_xml)
 
   @unittest.skip("Not implemented")
   def test_computer_reportUsage_valid_xml_invalid_partition_raises(self):
@@ -397,17 +404,20 @@ class TestComputer(SlapMixin):
     self.slap.initializeConnection(self.server_url)
     self.computer = self.slap.registerComputer(self.computer_guid)
     self.partition = self.slap.registerComputerPartition(self.computer_guid,
-        partition_id)
+                                                         partition_id)
     # XXX: As DTD is not defined currently proper XML is not known
     bad_partition_dtd_xml = """<xml>
 <computer-partition id='ANOTHER_PARTITION>96.5% CPU</computer-partition>
 </xml>"""
-    self.assertRaises(UndefinedYetException, self.computer.reportUsage,
-        bad_partition_dtd_xml)
+    self.assertRaises(UndefinedYetException,
+                      self.computer.reportUsage,
+                      bad_partition_dtd_xml)
+
 
 class RequestWasCalled(Exception):
   pass
 
+
 class TestComputerPartition(SlapMixin):
   """
   Tests slapos.slap.slap.ComputerPartition class functionality
@@ -415,65 +425,69 @@ class TestComputerPartition(SlapMixin):
 
   def test_request_sends_request(self):
     partition_id = 'PARTITION_01'
+
     def server_response(self, path, method, body, header):
       parsed_url = urlparse.urlparse(path.lstrip('/'))
       parsed_qs = urlparse.parse_qs(parsed_url.query)
-      if parsed_url.path == 'registerComputerPartition' and \
-         'computer_reference' in parsed_qs and \
-         'computer_partition_reference' in parsed_qs:
+      if (parsed_url.path == 'registerComputerPartition'
+              and 'computer_reference' in parsed_qs
+              and 'computer_partition_reference' in parsed_qs):
         slap_partition = slapos.slap.ComputerPartition(
-          parsed_qs['computer_reference'][0],
-          parsed_qs['computer_partition_reference'][0])
+            parsed_qs['computer_reference'][0],
+            parsed_qs['computer_partition_reference'][0])
         return (200, {}, xml_marshaller.xml_marshaller.dumps(slap_partition))
-      elif parsed_url.path == 'getComputerInformation' and \
-         'computer_id' in parsed_qs:
+      elif (parsed_url.path == 'getComputerInformation'
+              and 'computer_id' in parsed_qs):
         slap_computer = slapos.slap.Computer(parsed_qs['computer_id'][0])
         slap_computer._software_release_list = []
         slap_partition = slapos.slap.ComputerPartition(
-          parsed_qs['computer_id'][0],
-          partition_id)
+            parsed_qs['computer_id'][0],
+            partition_id)
         slap_computer._computer_partition_list = [slap_partition]
         return (200, {}, xml_marshaller.xml_marshaller.dumps(slap_computer))
       elif parsed_url.path == 'requestComputerPartition':
         raise RequestWasCalled
       else:
         return (404, {}, '')
+
     httplib.HTTPConnection._callback = server_response
     self.computer_guid = self._getTestComputerId()
     self.slap = slapos.slap.slap()
     self.slap.initializeConnection(self.server_url)
     computer_partition = self.slap.registerComputerPartition(
         self.computer_guid, partition_id)
-    self.assertRaises(RequestWasCalled, computer_partition.request,
-        'http://server/new/' + self._getTestComputerId(),
-        'software_type',
-        'myref')
+    self.assertRaises(RequestWasCalled,
+                      computer_partition.request,
+                      'http://server/new/' + self._getTestComputerId(),
+                      'software_type', 'myref')
 
   def test_request_not_raises(self):
     partition_id = 'PARTITION_01'
+
     def server_response(self, path, method, body, header):
       parsed_url = urlparse.urlparse(path.lstrip('/'))
       parsed_qs = urlparse.parse_qs(parsed_url.query)
-      if parsed_url.path == 'registerComputerPartition' and \
-         'computer_reference' in parsed_qs and \
-         'computer_partition_reference' in parsed_qs:
+      if (parsed_url.path == 'registerComputerPartition'
+              and 'computer_reference' in parsed_qs
+              and 'computer_partition_reference' in parsed_qs):
         slap_partition = slapos.slap.ComputerPartition(
-          parsed_qs['computer_reference'][0],
-          parsed_qs['computer_partition_reference'][0])
+            parsed_qs['computer_reference'][0],
+            parsed_qs['computer_partition_reference'][0])
         return (200, {}, xml_marshaller.xml_marshaller.dumps(slap_partition))
-      elif parsed_url.path == 'getComputerInformation' and \
-         'computer_id' in parsed_qs:
+      elif (parsed_url.path == 'getComputerInformation'
+              and 'computer_id' in parsed_qs):
         slap_computer = slapos.slap.Computer(parsed_qs['computer_id'][0])
         slap_computer._software_release_list = []
         slap_partition = slapos.slap.ComputerPartition(
-          parsed_qs['computer_id'][0],
-          partition_id)
+            parsed_qs['computer_id'][0],
+            partition_id)
         slap_computer._computer_partition_list = [slap_partition]
         return (200, {}, xml_marshaller.xml_marshaller.dumps(slap_computer))
       elif parsed_url.path == 'requestComputerPartition':
         return (408, {}, '')
       else:
         return (404, {}, '')
+
     httplib.HTTPConnection._callback = server_response
     self.computer_guid = self._getTestComputerId()
     self.slap = slapos.slap.slap()
@@ -488,29 +502,31 @@ class TestComputerPartition(SlapMixin):
 
   def test_request_raises_later(self):
     partition_id = 'PARTITION_01'
+
     def server_response(self, path, method, body, header):
       parsed_url = urlparse.urlparse(path.lstrip('/'))
       parsed_qs = urlparse.parse_qs(parsed_url.query)
-      if parsed_url.path == 'registerComputerPartition' and \
-         'computer_reference' in parsed_qs and \
-         'computer_partition_reference' in parsed_qs:
+      if (parsed_url.path == 'registerComputerPartition' and
+              'computer_reference' in parsed_qs and
+              'computer_partition_reference' in parsed_qs):
         slap_partition = slapos.slap.ComputerPartition(
-          parsed_qs['computer_reference'][0],
-          parsed_qs['computer_partition_reference'][0])
+            parsed_qs['computer_reference'][0],
+            parsed_qs['computer_partition_reference'][0])
         return (200, {}, xml_marshaller.xml_marshaller.dumps(slap_partition))
-      elif parsed_url.path == 'getComputerInformation' and \
-         'computer_id' in parsed_qs:
+      elif (parsed_url.path == 'getComputerInformation'
+              and 'computer_id' in parsed_qs):
         slap_computer = slapos.slap.Computer(parsed_qs['computer_id'][0])
         slap_computer._software_release_list = []
         slap_partition = slapos.slap.ComputerPartition(
-          parsed_qs['computer_id'][0],
-          partition_id)
+            parsed_qs['computer_id'][0],
+            partition_id)
         slap_computer._computer_partition_list = [slap_partition]
         return (200, {}, xml_marshaller.xml_marshaller.dumps(slap_computer))
       elif parsed_url.path == 'requestComputerPartition':
         return (408, {}, '')
       else:
         return (404, {}, '')
+
     httplib.HTTPConnection._callback = server_response
     self.computer_guid = self._getTestComputerId()
     self.slap = slapos.slap.slap()
@@ -530,33 +546,34 @@ class TestComputerPartition(SlapMixin):
     partition_id = 'PARTITION_01'
     requested_partition_id = 'PARTITION_02'
     computer_guid = self._getTestComputerId()
+
     def server_response(self, path, method, body, header):
       parsed_url = urlparse.urlparse(path.lstrip('/'))
       parsed_qs = urlparse.parse_qs(parsed_url.query)
-      if parsed_url.path == 'registerComputerPartition' and \
-         'computer_reference' in parsed_qs and \
-         'computer_partition_reference' in parsed_qs:
+      if (parsed_url.path == 'registerComputerPartition' and
+              'computer_reference' in parsed_qs and
+              'computer_partition_reference' in parsed_qs):
         slap_partition = slapos.slap.ComputerPartition(
-          parsed_qs['computer_reference'][0],
-          parsed_qs['computer_partition_reference'][0])
+            parsed_qs['computer_reference'][0],
+            parsed_qs['computer_partition_reference'][0])
         return (200, {}, xml_marshaller.xml_marshaller.dumps(slap_partition))
-      elif parsed_url.path == 'getComputerInformation' and \
-         'computer_id' in parsed_qs:
+      elif (parsed_url.path == 'getComputerInformation' and 'computer_id' in parsed_qs):
         slap_computer = slapos.slap.Computer(parsed_qs['computer_id'][0])
         slap_computer._software_release_list = []
         slap_partition = slapos.slap.ComputerPartition(
-          parsed_qs['computer_id'][0],
-          partition_id)
+            parsed_qs['computer_id'][0],
+            partition_id)
         slap_computer._computer_partition_list = [slap_partition]
         return (200, {}, xml_marshaller.xml_marshaller.dumps(slap_computer))
       elif parsed_url.path == 'requestComputerPartition':
         from slapos.slap.slap import SoftwareInstance
         slap_partition = SoftwareInstance(
-          slap_computer_id=computer_guid,
-          slap_computer_partition_id=requested_partition_id)
+            slap_computer_id=computer_guid,
+            slap_computer_partition_id=requested_partition_id)
         return (200, {}, xml_marshaller.xml_marshaller.dumps(slap_partition))
       else:
         return (404, {}, '')
+
     httplib.HTTPConnection._callback = server_response
     self.slap = slapos.slap.slap()
     self.slap.initializeConnection(self.server_url)
@@ -584,9 +601,9 @@ class TestComputerPartition(SlapMixin):
     def server_response(self, path, method, body, header):
       parsed_url = urlparse.urlparse(path.lstrip('/'))
       parsed_qs = urlparse.parse_qs(parsed_url.query)
-      if parsed_url.path == 'registerComputerPartition' and \
-         parsed_qs['computer_reference'][0] == computer_guid and \
-         parsed_qs['computer_partition_reference'][0] == partition_id:
+      if (parsed_url.path == 'registerComputerPartition' and
+              parsed_qs['computer_reference'][0] == computer_guid and
+              parsed_qs['computer_partition_reference'][0] == partition_id):
         partition = slapos.slap.ComputerPartition(
             computer_guid, partition_id)
         return (200, {}, xml_marshaller.xml_marshaller.dumps(partition))
@@ -596,8 +613,8 @@ class TestComputerPartition(SlapMixin):
 
     computer_partition = self.slap.registerComputerPartition(
         computer_guid, partition_id)
-    method = getattr(computer_partition, state)
-    self.assertRaises(slapos.slap.NotFoundError, method)
+    self.assertRaises(slapos.slap.NotFoundError,
+                      getattr(computer_partition, state))
 
   def test_available_new_ComputerPartition_raises(self):
     """
@@ -639,9 +656,9 @@ class TestComputerPartition(SlapMixin):
     def server_response(self, path, method, body, header):
       parsed_url = urlparse.urlparse(path.lstrip('/'))
       parsed_qs = urlparse.parse_qs(parsed_url.query)
-      if parsed_url.path == 'registerComputerPartition' and \
-         parsed_qs['computer_reference'][0] == computer_guid and \
-         parsed_qs['computer_partition_reference'][0] == partition_id:
+      if (parsed_url.path == 'registerComputerPartition' and
+              parsed_qs['computer_reference'][0] == computer_guid and
+              parsed_qs['computer_partition_reference'][0] == partition_id):
         partition = slapos.slap.ComputerPartition(
             computer_guid, partition_id)
         return (200, {}, xml_marshaller.xml_marshaller.dumps(partition))
@@ -650,9 +667,9 @@ class TestComputerPartition(SlapMixin):
         # XXX: why do we have computer_id and not computer_reference?
         # XXX: why do we have computer_partition_id and not
         # computer_partition_reference?
-        if parsed_qs_body['computer_id'][0] == computer_guid and \
-           parsed_qs_body['computer_partition_id'][0] == partition_id and \
-           parsed_qs_body['error_log'][0] == 'some error':
+        if (parsed_qs_body['computer_id'][0] == computer_guid and
+                parsed_qs_body['computer_partition_id'][0] == partition_id and
+                parsed_qs_body['error_log'][0] == 'some error'):
           return (200, {}, '')
 
       return (404, {}, '')
@@ -663,6 +680,7 @@ class TestComputerPartition(SlapMixin):
     # XXX: Interface does not define return value
     computer_partition.error('some error')
 
+
 class TestSoftwareRelease(SlapMixin):
   """
   Tests slap.SoftwareRelease class functionality
@@ -707,18 +725,20 @@ class TestSoftwareRelease(SlapMixin):
     def server_response(self, path, method, body, header):
       parsed_url = urlparse.urlparse(path.lstrip('/'))
       parsed_qs = urlparse.parse_qs(body)
-      if parsed_url.path == 'softwareReleaseError' and \
-         parsed_qs['computer_id'][0] == computer_guid and \
-         parsed_qs['url'][0] == software_release_uri and \
-         parsed_qs['error_log'][0] == 'some error':
+      if (parsed_url.path == 'softwareReleaseError' and
+              parsed_qs['computer_id'][0] == computer_guid and
+              parsed_qs['url'][0] == software_release_uri and
+              parsed_qs['error_log'][0] == 'some error'):
         return (200, {}, '')
       return (404, {}, '')
+
     httplib.HTTPConnection._callback = server_response
 
     software_release = self.slap.registerSoftwareRelease(software_release_uri)
     software_release._computer_guid = computer_guid
     software_release.error('some error')
 
+
 class TestOpenOrder(SlapMixin):
   def test_request_sends_request(self):
     software_release_uri = 'http://server/new/' + self._getTestComputerId()
@@ -726,12 +746,16 @@ class TestOpenOrder(SlapMixin):
     self.slap.initializeConnection(self.server_url)
     # XXX: Interface lack registerOpenOrder method declaration
     open_order = self.slap.registerOpenOrder()
+
     def server_response(self, path, method, body, header):
       parsed_url = urlparse.urlparse(path.lstrip('/'))
       if parsed_url.path == 'requestComputerPartition':
         raise RequestWasCalled
+
     httplib.HTTPConnection._callback = server_response
-    self.assertRaises(RequestWasCalled, open_order.request, software_release_uri, 'myrefe')
+    self.assertRaises(RequestWasCalled,
+                      open_order.request,
+                      software_release_uri, 'myrefe')
 
   def test_request_not_raises(self):
     software_release_uri = 'http://server/new/' + self._getTestComputerId()
@@ -748,13 +772,16 @@ class TestOpenOrder(SlapMixin):
     self.slap.initializeConnection(self.server_url)
     # XXX: Interface lack registerOpenOrder method declaration
     open_order = self.slap.registerOpenOrder()
+
     def server_response(self, path, method, body, header):
       return (408, {}, '')
+
     httplib.HTTPConnection._callback = server_response
     computer_partition = open_order.request(software_release_uri, 'myrefe')
     self.assertIsInstance(computer_partition, slapos.slap.ComputerPartition)
 
-    self.assertRaises(slapos.slap.ResourceNotReady, computer_partition.getId)
+    self.assertRaises(slapos.slap.ResourceNotReady,
+                      computer_partition.getId)
 
   def test_request_fullfilled_work(self):
     software_release_uri = 'http://server/new/' + self._getTestComputerId()
@@ -764,12 +791,14 @@ class TestOpenOrder(SlapMixin):
     open_order = self.slap.registerOpenOrder()
     computer_guid = self._getTestComputerId()
     requested_partition_id = 'PARTITION_01'
+
     def server_response(self, path, method, body, header):
       from slapos.slap.slap import SoftwareInstance
       slap_partition = SoftwareInstance(
-        slap_computer_id=computer_guid,
-        slap_computer_partition_id=requested_partition_id)
+          slap_computer_id=computer_guid,
+          slap_computer_partition_id=requested_partition_id)
       return (200, {}, xml_marshaller.xml_marshaller.dumps(slap_partition))
+
     httplib.HTTPConnection._callback = server_response
 
     computer_partition = open_order.request(software_release_uri, 'myrefe')
diff --git a/slapos/tests/slapformat.py b/slapos/tests/slapformat.py
index 1aa898cc43dbd95c4273d1c0fe76e51017985825..7f4b915a6ff11337c9fa0236aa1f4b46c3539677 100644
--- a/slapos/tests/slapformat.py
+++ b/slapos/tests/slapformat.py
@@ -45,9 +45,11 @@ USER_LIST = []
 GROUP_LIST = []
 INTERFACE_DICT = {}
 
+
 class FakeConfig:
   pass
 
+
 class TestLoggerHandler(logging.Handler):
   def __init__(self, *args, **kwargs):
     self.bucket = []
@@ -56,6 +58,7 @@ class TestLoggerHandler(logging.Handler):
   def emit(self, record):
     self.bucket.append(record.msg)
 
+
 class FakeCallAndRead:
   def __init__(self):
     self.external_command_list = []
@@ -89,6 +92,7 @@ class FakeCallAndRead:
     self.external_command_list.append(' '.join(argument_list))
     return retval
 
+
 class LoggableWrapper:
   def __init__(self, logger, name):
     self.__logger = logger
@@ -99,11 +103,13 @@ class LoggableWrapper:
       '%s=%r' % (x, y) for x, y in kwargs.iteritems()]
     self.__logger.debug('%s(%s)' % (self.__name, ', '.join(arg_list)))
 
+
 class TimeMock:
   @classmethod
   def sleep(self, seconds):
     return
 
+
 class GrpMock:
   @classmethod
   def getgrnam(self, name):
@@ -112,6 +118,7 @@ class GrpMock:
       return True
     raise KeyError
 
+
 class PwdMock:
   @classmethod
   def getpwnam(self, name):
@@ -123,6 +130,7 @@ class PwdMock:
       return result
     raise KeyError
 
+
 class NetifacesMock:
   @classmethod
   def ifaddresses(self, name):
@@ -136,12 +144,14 @@ class NetifacesMock:
     global INTERFACE_DICT
     return INTERFACE_DICT.keys()
 
+
 class SlapformatMixin(unittest.TestCase):
   # keep big diffs
   maxDiff = None
+
   def patchNetifaces(self):
     self.netifaces = NetifacesMock()
-    self.saved_netifaces = dict()
+    self.saved_netifaces = {}
     for fake in vars(NetifacesMock):
       self.saved_netifaces[fake] = getattr(netifaces, fake, None)
       setattr(netifaces, fake, getattr(self.netifaces, fake))
@@ -152,7 +162,7 @@ class SlapformatMixin(unittest.TestCase):
     del self.saved_netifaces
 
   def patchPwd(self):
-    self.saved_pwd = dict()
+    self.saved_pwd = {}
     for fake in vars(PwdMock):
       self.saved_pwd[fake] = getattr(pwd, fake, None)
       setattr(pwd, fake, getattr(PwdMock, fake))
@@ -163,7 +173,7 @@ class SlapformatMixin(unittest.TestCase):
     del self.saved_pwd
 
   def patchTime(self):
-    self.saved_time = dict()
+    self.saved_time = {}
     for fake in vars(TimeMock):
       self.saved_time[fake] = getattr(time, fake, None)
       setattr(time, fake, getattr(TimeMock, fake))
@@ -174,7 +184,7 @@ class SlapformatMixin(unittest.TestCase):
     del self.saved_time
 
   def patchGrp(self):
-    self.saved_grp = dict()
+    self.saved_grp = {}
     for fake in vars(GrpMock):
       self.saved_grp[fake] = getattr(grp, fake, None)
       setattr(grp, fake, getattr(GrpMock, fake))
@@ -185,7 +195,7 @@ class SlapformatMixin(unittest.TestCase):
     del self.saved_grp
 
   def patchOs(self, logger):
-    self.saved_os = dict()
+    self.saved_os = {}
     for fake in ['mkdir', 'chown', 'chmod', 'makedirs']:
       self.saved_os[fake] = getattr(os, fake, None)
       f = LoggableWrapper(logger, fake)
@@ -231,6 +241,7 @@ class SlapformatMixin(unittest.TestCase):
     self.restoreNetifaces()
     slapos.format.callAndRead = self.real_callAndRead
 
+
 class TestComputer(SlapformatMixin):
   def test_getAddress_empty_computer(self):
     computer = slapos.format.Computer('computer')
@@ -276,9 +287,8 @@ class TestComputer(SlapformatMixin):
       "makedirs('/software_root', 493)",
       "chmod('/software_root', 493)"],
       self.test_result.bucket)
-    self.assertEqual([
-      'ip addr list bridge',],
-      self.fakeCallAndRead.external_command_list)
+    self.assertEqual(['ip addr list bridge'],
+                     self.fakeCallAndRead.external_command_list)
 
   @unittest.skip("Not implemented")
   def test_construct_empty_prepared_no_alter_network(self):
@@ -377,7 +387,7 @@ class TestComputer(SlapformatMixin):
     partition = slapos.format.Partition('partition', '/part_path',
       slapos.format.User('testuser'), [], None)
     global USER_LIST
-    USER_LIST=['testuser']
+    USER_LIST = ['testuser']
     partition.tap = slapos.format.Tap('tap')
     computer.partition_list = [partition]
     global INTERFACE_DICT
@@ -488,6 +498,7 @@ class TestComputer(SlapformatMixin):
     ],
       self.fakeCallAndRead.external_command_list)
 
+
 class TestPartition(SlapformatMixin):
 
   def test_createPath(self):
@@ -513,6 +524,7 @@ class TestPartition(SlapformatMixin):
       self.test_result.bucket
     )
 
+
 class TestUser(SlapformatMixin):
   def test_create(self):
     user = slapos.format.User('doesnotexistsyet')
diff --git a/slapos/tests/slapgrid.py b/slapos/tests/slapgrid.py
index b233e62a8f33808e96efb2d581e48854b52308c1..91b4432a61bbdcda095983d38f21d4883aa3a9cc 100644
--- a/slapos/tests/slapgrid.py
+++ b/slapos/tests/slapgrid.py
@@ -98,6 +98,7 @@ chmod 755 etc/service/daemon &&
 touch worked
 """
 
+
 class BasicMixin:
   def setUp(self):
     self._tempdir = tempfile.mkdtemp()
@@ -112,7 +113,7 @@ class BasicMixin:
     self.computer_id = 'computer'
     self.supervisord_socket = os.path.join(self._tempdir, 'supervisord.sock')
     self.supervisord_configuration_path = os.path.join(self._tempdir,
-      'supervisord')
+                                                       'supervisord')
     self.usage_report_periodicity = 1
     self.buildout = None
     self.grid = slapgrid.Slapgrid(self.software_root,
@@ -125,8 +126,10 @@ class BasicMixin:
                                   develop=develop,
                                   logger=logging.getLogger())
     # monkey patch buildout bootstrap
+
     def dummy(*args, **kw):
       pass
+
     slapos.grid.utils.bootstrapBuildout = dummy
 
   def launchSlapgrid(self, develop=False):
@@ -186,6 +189,7 @@ class TestBasicSlapgridCP(BasicMixin, unittest.TestCase):
     os.mkdir(self.instance_root)
     self.assertRaises(socket.error, self.grid.processComputerPartitionList)
 
+
 class MasterMixin(BasicMixin):
 
   def _patchHttplib(self):
@@ -218,6 +222,7 @@ class MasterMixin(BasicMixin):
 
   def _unmock_sleep(self):
     time.sleep = self.real_sleep
+
   def setUp(self):
     self._patchHttplib()
     self._mock_sleep()
@@ -260,9 +265,9 @@ class ComputerForTest:
     Will set requested amount of software
     """
     self.software_list = [
-            SoftwareForTest(self.software_root, name=str(i))
-            for i in range(self.software_amount)
-            ]
+        SoftwareForTest(self.software_root, name=str(i))
+        for i in range(self.software_amount)
+    ]
 
   def setInstances(self):
     """
@@ -274,9 +279,9 @@ class ComputerForTest:
       software = None
 
     self.instance_list = [
-            InstanceForTest(self.instance_root, name=str(i), software=software)
-            for i in range(self.instance_amount)
-            ]
+        InstanceForTest(self.instance_root, name=str(i), software=software)
+        for i in range(self.instance_amount)
+    ]
 
   def getComputer(self, computer_id):
     """
@@ -284,13 +289,13 @@ class ComputerForTest:
     """
     slap_computer = slapos.slap.Computer(computer_id)
     slap_computer._software_release_list = [
-                        software.getSoftware(computer_id)
-                        for software in self.software_list
-                        ]
+        software.getSoftware(computer_id)
+        for software in self.software_list
+    ]
     slap_computer._computer_partition_list = [
-                        instance.getInstance(computer_id)
-                        for instance in self.instance_list
-                        ]
+        instance.getInstance(computer_id)
+        for instance in self.instance_list
+    ]
     return slap_computer
 
   def setServerResponse(self):
@@ -310,8 +315,8 @@ class ComputerForTest:
         parsed_qs = urlparse.parse_qs(parsed_url.query)
       else:
         parsed_qs = urlparse.parse_qs(body)
-      if parsed_url.path == 'getFullComputerInformation' and \
-            'computer_id' in parsed_qs:
+      if (parsed_url.path == 'getFullComputerInformation'
+              and 'computer_id' in parsed_qs):
         slap_computer = self.getComputer(parsed_qs['computer_id'][0])
         return (200, {}, xml_marshaller.xml_marshaller.dumps(slap_computer))
       if method == 'POST' and 'computer_partition_id' in parsed_qs:
@@ -332,9 +337,13 @@ class ComputerForTest:
         if parsed_url.path == 'softwareInstanceBang':
           return (200, {}, '')
         if parsed_url.path == 'softwareInstanceError':
-          instance.error_log = '\n'.join([line for line \
-                                   in parsed_qs['error_log'][0].splitlines()
-                                 if 'dropPrivileges' not in line])
+          instance.error_log = '\n'.join(
+              [
+                  line
+                  for line in parsed_qs['error_log'][0].splitlines()
+                  if 'dropPrivileges' not in line
+              ]
+          )
           instance.error = True
           return (200, {}, '')
 
@@ -345,9 +354,13 @@ class ComputerForTest:
         if parsed_url.path == 'buildingSoftwareRelease':
           return (200, {}, '')
         if parsed_url.path == 'softwareReleaseError':
-          software.error_log = '\n'.join([line for line \
-                                   in parsed_qs['error_log'][0].splitlines()
-                                 if 'dropPrivileges' not in line])
+          software.error_log = '\n'.join(
+              [
+                  line
+                  for line in parsed_qs['error_log'][0].splitlines()
+                  if 'dropPrivileges' not in line
+              ]
+          )
           software.error = True
           return (200, {}, '')
 
@@ -382,7 +395,7 @@ class InstanceForTest:
     partition._software_release_document = self.getSoftwareRelease()
     partition._requested_state = self.requested_state
     if self.software is not None:
-      if self.timestamp is not None :
+      if self.timestamp is not None:
         partition._parameter_dict = {'timestamp': self.timestamp}
     return partition
 
@@ -394,7 +407,8 @@ class InstanceForTest:
       sr = slapos.slap.SoftwareRelease()
       sr._software_release = self.software.name
       return sr
-    else: return None
+    else:
+      return None
 
   def setPromise(self, promise_name, promise_content):
     """
@@ -415,10 +429,11 @@ class InstanceForTest:
     self.certificate = str(random.random())
     open(self.cert_file, 'w').write(self.certificate)
     self.key_file = os.path.join(certificate_repository_path,
-                                  "%s.key" % self.name)
+                                 '%s.key' % self.name)
     self.key = str(random.random())
     open(self.key_file, 'w').write(self.key)
 
+
 class SoftwareForTest:
   """
   Class to prepare and simulate software.
@@ -448,7 +463,6 @@ class SoftwareForTest:
     software._requested_state = self.requested_state
     return software
 
-
   def setTemplateCfg(self, template="""[buildout]"""):
     """
     Set template.cfg
@@ -467,9 +481,8 @@ touch worked"""):
     """
     Set a periodicity file
     """
-    open(os.path.join(self.srdir, 'periodicity'), 'w').write(
-      """%s""" % (periodicity))
-
+    with open(os.path.join(self.srdir, 'periodicity'), 'w') as fout:
+      fout.write(str(periodicity))
 
 
 class TestSlapgridCPWithMaster(MasterMixin, unittest.TestCase):
@@ -548,7 +561,6 @@ class TestSlapgridCPWithMaster(MasterMixin, unittest.TestCase):
                       'startedComputerPartition'])
     self.assertEqual(partition.state, 'started')
 
-
   def test_one_partition_started_stopped(self):
     computer = ComputerForTest(self.software_root, self.instance_root)
     instance = computer.instance_list[0]
@@ -653,7 +665,7 @@ chmod 755 etc/run/wrapper
     os.path.getsize(wrapper_log)
     self.assertIn('Working', open(wrapper_log).read())
     self.assertItemsEqual(os.listdir(self.software_root),
-      [instance.software.software_hash])
+                          [instance.software.software_hash])
     self.assertEqual(computer.sequence,
                      ['getFullComputerInformation', 'availableComputerPartition',
                       'startedComputerPartition'])
@@ -683,7 +695,6 @@ exit 1
                       'softwareInstanceError'])
     self.assertEqual(instance.state, 'started')
 
-
   def test_one_partition_stopped_started(self):
     computer = ComputerForTest(self.software_root, self.instance_root)
     instance = computer.instance_list[0]
@@ -696,7 +707,7 @@ exit 1
     self.assertItemsEqual(os.listdir(partition),
                           ['buildout.cfg', 'etc', 'software_release', 'worked'])
     self.assertItemsEqual(os.listdir(self.software_root),
-      [instance.software.software_hash])
+                          [instance.software.software_hash])
     self.assertEqual(computer.sequence,
                      ['getFullComputerInformation', 'availableComputerPartition',
                       'stoppedComputerPartition'])
@@ -710,7 +721,7 @@ exit 1
     self.assertItemsEqual(os.listdir(partition),
                           ['.0_wrapper.log', 'etc', 'buildout.cfg', 'software_release', 'worked'])
     self.assertItemsEqual(os.listdir(self.software_root),
-      [instance.software.software_hash])
+                          [instance.software.software_hash])
     tries = 50
     wrapper_log = os.path.join(instance.partition_path, '.0_wrapper.log')
     while tries > 0:
@@ -756,11 +767,11 @@ class TestSlapgridCPWithMasterWatchdog(MasterMixin, unittest.TestCase):
     # Prepare watchdog
     self.watchdog_banged = os.path.join(self._tempdir, 'watchdog_banged')
     watchdog_path = os.path.join(self._tempdir, 'watchdog')
-    open(watchdog_path, 'w').write(
-      WATCHDOG_TEMPLATE % {
-            'python_path': sys.executable,
-            'sys_path': sys.path,
-            'watchdog_banged': self.watchdog_banged})
+    open(watchdog_path, 'w').write(WATCHDOG_TEMPLATE % {
+        'python_path': sys.executable,
+        'sys_path': sys.path,
+        'watchdog_banged': self.watchdog_banged
+    })
     os.chmod(watchdog_path, 0o755)
     self.grid.watchdog_path = watchdog_path
     slapos.grid.slapgrid.WATCHDOG_PATH = watchdog_path
@@ -855,7 +866,6 @@ class TestSlapgridCPWithMasterWatchdog(MasterMixin, unittest.TestCase):
       time.sleep(0.1)
     self.assertFalse(os.path.exists(self.watchdog_banged))
 
-
   def test_watched_by_watchdog_bang(self):
     """
     Test that a process going to fatal or exited mode in supervisord
@@ -869,16 +879,16 @@ class TestSlapgridCPWithMasterWatchdog(MasterMixin, unittest.TestCase):
     instance.setCertificate(certificate_repository_path)
 
     watchdog = Watchdog({
-                    'master_url': 'https://127.0.0.1/',
-                    'computer_id': self.computer_id,
-                    'certificate_repository_path': certificate_repository_path
-                    })
+        'master_url': 'https://127.0.0.1/',
+        'computer_id': self.computer_id,
+        'certificate_repository_path': certificate_repository_path
+    })
     for event in watchdog.process_state_events:
       instance.sequence = []
       instance.header_list = []
       headers = {'eventname': event}
-      payload = "processname:%s groupname:%s from_state:RUNNING"\
-          % ('daemon'+getWatchdogID(), instance.name)
+      payload = 'processname:%s groupname:%s from_state:RUNNING' % (
+          'daemon' + getWatchdogID(), instance.name)
       watchdog.handle_event(headers, payload)
       self.assertEqual(instance.sequence, ['softwareInstanceBang'])
       self.assertEqual(instance.header_list[0]['key'], instance.key)
@@ -893,20 +903,19 @@ class TestSlapgridCPWithMasterWatchdog(MasterMixin, unittest.TestCase):
     instance = computer.instance_list[0]
 
     watchdog = Watchdog({
-                    'master_url': self.master_url,
-                    'computer_id': self.computer_id,
-                    'certificate_repository_path': None
-                    })
+        'master_url': self.master_url,
+        'computer_id': self.computer_id,
+        'certificate_repository_path': None
+    })
     for event in ['EVENT', 'PROCESS_STATE', 'PROCESS_STATE_RUNNING',
                   'PROCESS_STATE_BACKOFF', 'PROCESS_STATE_STOPPED']:
       computer.sequence = []
       headers = {'eventname': event}
-      payload = "processname:%s groupname:%s from_state:RUNNING"\
-          % ('daemon'+getWatchdogID(), instance.name)
+      payload = 'processname:%s groupname:%s from_state:RUNNING' % (
+          'daemon' + getWatchdogID(), instance.name)
       watchdog.handle_event(headers, payload)
       self.assertEqual(instance.sequence, [])
 
-
   def test_not_watched_by_watchdog_do_not_bang(self):
     """
     Test that a process going to fatal or exited mode in supervisord
@@ -917,10 +926,10 @@ class TestSlapgridCPWithMasterWatchdog(MasterMixin, unittest.TestCase):
     instance = computer.instance_list[0]
 
     watchdog = Watchdog({
-                    'master_url': self.master_url,
-                    'computer_id': self.computer_id,
-                    'certificate_repository_path': None
-                    })
+        'master_url': self.master_url,
+        'computer_id': self.computer_id,
+        'certificate_repository_path': None
+    })
     for event in watchdog.process_state_events:
       computer.sequence = []
       headers = {'eventname': event}
@@ -951,7 +960,6 @@ class TestSlapgridCPPartitionProcessing(MasterMixin, unittest.TestCase):
     self.assertEqual(instance.sequence,
                      ['availableComputerPartition', 'stoppedComputerPartition'])
 
-
   def test_partition_timestamp_develop(self):
     computer = ComputerForTest(self.software_root, self.instance_root)
     instance = computer.instance_list[0]
@@ -990,7 +998,6 @@ class TestSlapgridCPPartitionProcessing(MasterMixin, unittest.TestCase):
     self.assertEqual(instance.sequence,
                      ['availableComputerPartition', 'stoppedComputerPartition'])
 
-
   def test_partition_timestamp_new_timestamp(self):
     computer = ComputerForTest(self.software_root, self.instance_root)
     instance = computer.instance_list[0]
@@ -1003,7 +1010,7 @@ class TestSlapgridCPPartitionProcessing(MasterMixin, unittest.TestCase):
     self.assertItemsEqual(os.listdir(partition),
                           ['.timestamp', 'buildout.cfg', 'software_release', 'worked'])
     self.assertItemsEqual(os.listdir(self.software_root), [instance.software.software_hash])
-    instance.timestamp = str(int(timestamp)+1)
+    instance.timestamp = str(int(timestamp) + 1)
     self.assertEqual(self.launchSlapgrid(), slapgrid.SLAPGRID_SUCCESS)
     self.assertEqual(self.launchSlapgrid(), slapgrid.SLAPGRID_SUCCESS)
     self.assertEqual(computer.sequence,
@@ -1024,7 +1031,7 @@ class TestSlapgridCPPartitionProcessing(MasterMixin, unittest.TestCase):
     self.assertItemsEqual(os.listdir(partition),
                           ['.timestamp', 'buildout.cfg', 'software_release', 'worked'])
     self.assertItemsEqual(os.listdir(self.software_root),
-      [instance.software.software_hash])
+                          [instance.software.software_hash])
     instance.timestamp = None
     self.launchSlapgrid()
     self.assertEqual(computer.sequence,
@@ -1032,7 +1039,6 @@ class TestSlapgridCPPartitionProcessing(MasterMixin, unittest.TestCase):
                       'stoppedComputerPartition', 'getFullComputerInformation',
                       'availableComputerPartition', 'stoppedComputerPartition'])
 
-
   def test_partition_periodicity_remove_timestamp(self):
     """
     Check that if periodicity forces run of buildout for a partition, it
@@ -1061,7 +1067,6 @@ class TestSlapgridCPPartitionProcessing(MasterMixin, unittest.TestCase):
     self.assertItemsEqual(os.listdir(partition),
                           ['.timestamp', 'buildout.cfg', 'software_release', 'worked'])
 
-
   def test_partition_periodicity_is_not_overloaded_if_forced(self):
     """
     If periodicity file in software directory but periodicity is forced
@@ -1093,7 +1098,6 @@ class TestSlapgridCPPartitionProcessing(MasterMixin, unittest.TestCase):
                      ['getFullComputerInformation', 'availableComputerPartition',
                       'startedComputerPartition', 'getFullComputerInformation'])
 
-
   def test_one_partition_periodicity_from_file_does_not_disturb_others(self):
     """
     If time between last processing of instance and now is superior
@@ -1109,7 +1113,7 @@ class TestSlapgridCPPartitionProcessing(MasterMixin, unittest.TestCase):
     """
     computer = ComputerForTest(self.software_root, self.instance_root, 20, 20)
     instance0 = computer.instance_list[0]
-    timestamp = str(int(time.time()-5))
+    timestamp = str(int(time.time() - 5))
     instance0.timestamp = timestamp
     instance0.requested_state = 'started'
     for instance in computer.instance_list[1:]:
@@ -1123,7 +1127,7 @@ class TestSlapgridCPPartitionProcessing(MasterMixin, unittest.TestCase):
     self.launchSlapgrid()
     self.assertNotEqual(wanted_periodicity, self.grid.maximum_periodicity)
     last_runtime = os.path.getmtime(
-      os.path.join(instance0.partition_path, '.timestamp'))
+        os.path.join(instance0.partition_path, '.timestamp'))
     time.sleep(wanted_periodicity + 1)
     for instance in computer.instance_list[1:]:
       self.assertEqual(instance.sequence,
@@ -1138,11 +1142,10 @@ class TestSlapgridCPPartitionProcessing(MasterMixin, unittest.TestCase):
       self.assertEqual(instance.sequence,
                        ['availableComputerPartition', 'stoppedComputerPartition'])
     self.assertGreater(
-      os.path.getmtime(os.path.join(instance0.partition_path, '.timestamp')),
-      last_runtime)
+        os.path.getmtime(os.path.join(instance0.partition_path, '.timestamp')),
+        last_runtime)
     self.assertNotEqual(wanted_periodicity, self.grid.maximum_periodicity)
 
-
   def test_one_partition_stopped_is_not_processed_after_periodicity(self):
     """
     Check that periodicity doesn't force processing a partition if it is not
@@ -1150,7 +1153,7 @@ class TestSlapgridCPPartitionProcessing(MasterMixin, unittest.TestCase):
     """
     computer = ComputerForTest(self.software_root, self.instance_root, 20, 20)
     instance0 = computer.instance_list[0]
-    timestamp = str(int(time.time()-5))
+    timestamp = str(int(time.time() - 5))
     instance0.timestamp = timestamp
     for instance in computer.instance_list[1:]:
       instance.software = \
@@ -1163,7 +1166,7 @@ class TestSlapgridCPPartitionProcessing(MasterMixin, unittest.TestCase):
     self.launchSlapgrid()
     self.assertNotEqual(wanted_periodicity, self.grid.maximum_periodicity)
     last_runtime = os.path.getmtime(
-      os.path.join(instance0.partition_path, '.timestamp'))
+        os.path.join(instance0.partition_path, '.timestamp'))
     time.sleep(wanted_periodicity + 1)
     for instance in computer.instance_list[1:]:
       self.assertEqual(instance.sequence,
@@ -1171,14 +1174,13 @@ class TestSlapgridCPPartitionProcessing(MasterMixin, unittest.TestCase):
     time.sleep(1)
     self.launchSlapgrid()
     self.assertEqual(instance0.sequence,
-                     ['availableComputerPartition', 'stoppedComputerPartition',
-                      ])
+                     ['availableComputerPartition', 'stoppedComputerPartition'])
     for instance in computer.instance_list[1:]:
       self.assertEqual(instance.sequence,
                        ['availableComputerPartition', 'stoppedComputerPartition'])
-    self.assertEqual(
-      os.path.getmtime(os.path.join(instance0.partition_path, '.timestamp')),
-      last_runtime)
+    self.assertEqual(os.path.getmtime(os.path.join(instance0.partition_path,
+                                                   '.timestamp')),
+                     last_runtime)
     self.assertNotEqual(wanted_periodicity, self.grid.maximum_periodicity)
 
   def test_one_partition_destroyed_is_not_processed_after_periodicity(self):
@@ -1188,7 +1190,7 @@ class TestSlapgridCPPartitionProcessing(MasterMixin, unittest.TestCase):
     """
     computer = ComputerForTest(self.software_root, self.instance_root, 20, 20)
     instance0 = computer.instance_list[0]
-    timestamp = str(int(time.time()-5))
+    timestamp = str(int(time.time() - 5))
     instance0.timestamp = timestamp
     instance0.requested_state = 'stopped'
     for instance in computer.instance_list[1:]:
@@ -1202,7 +1204,7 @@ class TestSlapgridCPPartitionProcessing(MasterMixin, unittest.TestCase):
     self.launchSlapgrid()
     self.assertNotEqual(wanted_periodicity, self.grid.maximum_periodicity)
     last_runtime = os.path.getmtime(
-      os.path.join(instance0.partition_path, '.timestamp'))
+        os.path.join(instance0.partition_path, '.timestamp'))
     time.sleep(wanted_periodicity + 1)
     for instance in computer.instance_list[1:]:
       self.assertEqual(instance.sequence,
@@ -1211,14 +1213,13 @@ class TestSlapgridCPPartitionProcessing(MasterMixin, unittest.TestCase):
     instance0.requested_state = 'destroyed'
     self.launchSlapgrid()
     self.assertEqual(instance0.sequence,
-                     ['availableComputerPartition', 'stoppedComputerPartition',
-                     ])
+                     ['availableComputerPartition', 'stoppedComputerPartition'])
     for instance in computer.instance_list[1:]:
       self.assertEqual(instance.sequence,
                        ['availableComputerPartition', 'stoppedComputerPartition'])
-    self.assertEqual(
-      os.path.getmtime(os.path.join(instance0.partition_path, '.timestamp')),
-      last_runtime)
+    self.assertEqual(os.path.getmtime(os.path.join(instance0.partition_path,
+                                                   '.timestamp')),
+                     last_runtime)
     self.assertNotEqual(wanted_periodicity, self.grid.maximum_periodicity)
 
   def test_one_partition_buildout_fail_does_not_disturb_others(self):
@@ -1365,7 +1366,6 @@ class TestSlapgridUsageReport(MasterMixin, unittest.TestCase):
                       'destroyedComputerPartition'])
     self.assertEqual(instance.state, 'destroyed')
 
-
   def test_partition_list_is_complete_if_empty_destroyed_partition(self):
     """
     Test that an empty partition with destroyed state but with SR informations
@@ -1457,7 +1457,6 @@ class TestSlapgridUsageReport(MasterMixin, unittest.TestCase):
                      ['getFullComputerInformation'])
     self.assertEqual('started', instance.state)
 
-
   def test_slapgrid_instance_ignore_free_instance(self):
     """
     Test than a free instance (so in "destroyed" state, but empty, without
@@ -1495,7 +1494,6 @@ class TestSlapgridUsageReport(MasterMixin, unittest.TestCase):
     self.assertEqual(computer.sequence, ['getFullComputerInformation'])
 
 
-
 class TestSlapgridSoftwareRelease(MasterMixin, unittest.TestCase):
   def test_one_software_buildout_fail_is_correctly_logged(self):
     """
@@ -1517,6 +1515,7 @@ echo %s; echo %s; exit 42""" % (line1, line2))
     self.assertIn(line2, software.error_log)
     self.assertIn('Failed to run buildout', software.error_log)
 
+
 class SlapgridInitialization(unittest.TestCase):
   """
   "Abstract" class setting setup and teardown for TestSlapgridArgumentTuple
@@ -1558,6 +1557,7 @@ buildout = /path/to/buildout/binary
     self.signature_key_file_descriptor.close()
     shutil.rmtree(self.certificate_repository_path, True)
 
+
 class TestSlapgridArgumentTuple(SlapgridInitialization):
   """
   Test suite about arguments given to slapgrid command.
@@ -1586,8 +1586,8 @@ class TestSlapgridArgumentTuple(SlapgridInitialization):
       Raises if the  signature_private_key_file does not exists.
     """
     parser = parseArgumentTupleAndReturnSlapgridObject
-    argument_tuple = ("--signature_private_key_file", "/non/exists/path") + \
-                      self.default_arg_tuple
+    argument_tuple = ("--signature_private_key_file",
+                      "/non/exists/path") + self.default_arg_tuple
     self.assertRaisesRegexp(RuntimeError,
                             "File '/non/exists/path' does not exist.",
                             parser, *argument_tuple)
@@ -1599,11 +1599,10 @@ class TestSlapgridArgumentTuple(SlapgridInitialization):
     """
     parser = parseArgumentTupleAndReturnSlapgridObject
     argument_tuple = ("--signature_private_key_file",
-                      self.signature_key_file_descriptor.name) + \
-                      self.default_arg_tuple
+                      self.signature_key_file_descriptor.name) + self.default_arg_tuple
     slapgrid_object = parser(*argument_tuple)[0]
     self.assertEquals(self.signature_key_file_descriptor.name,
-                          slapgrid_object.signature_private_key_file)
+                      slapgrid_object.signature_private_key_file)
 
   def test_backward_compatibility_all(self):
     """
@@ -1639,6 +1638,7 @@ class TestSlapgridArgumentTuple(SlapgridInitialization):
     slapgrid_object = parser('--maximum-periodicity', '40', *self.default_arg_tuple)[0]
     self.assertTrue(slapgrid_object.force_periodicity)
 
+
 class TestSlapgridConfigurationFile(SlapgridInitialization):
 
   def test_upload_binary_cache_blacklist(self):
@@ -1777,7 +1777,7 @@ class TestSlapgridCPWithMasterPromise(MasterMixin, unittest.TestCase):
     self.assertNotEqual('started', instance.state)
 
   def test_one_succeeding_promise(self):
-    computer = ComputerForTest(self.software_root,self.instance_root)
+    computer = ComputerForTest(self.software_root, self.instance_root)
     instance = computer.instance_list[0]
     instance.requested_state = 'started'
     self.fake_waiting_time = 0.1
@@ -1820,7 +1820,6 @@ class TestSlapgridCPWithMasterPromise(MasterMixin, unittest.TestCase):
     self.assertTrue(instance.error)
     self.assertIsNone(instance.state)
 
-
   def test_timeout_works(self):
     computer = ComputerForTest(self.software_root, self.instance_root)
     instance = computer.instance_list[0]
@@ -1887,9 +1886,9 @@ class TestSlapgridCPWithMasterPromise(MasterMixin, unittest.TestCase):
                 else
                   exit 127
                 fi""" % {
-                    'worked_file': worked_file,
-                    'lockfile': lockfile
-                    })
+          'worked_file': worked_file,
+          'lockfile': lockfile
+      })
       instance.setPromise('promise_%s' % i, promise)
     self.assertEqual(self.grid.processComputerPartitionList(),
                      slapos.grid.slapgrid.SLAPGRID_PROMISE_FAIL)
@@ -1913,10 +1912,10 @@ class TestSlapgridCPWithMasterPromise(MasterMixin, unittest.TestCase):
                 else
                   sleep 5
                 fi
-                exit 0"""  % {
-                    'worked_file': worked_file,
-                    'lockfile': lockfile
-                    })
+                exit 0""" % {
+          'worked_file': worked_file,
+          'lockfile': lockfile}
+      )
       instance.setPromise('promise_%d' % i, promise)
 
     self.assertEqual(self.grid.processComputerPartitionList(),
diff --git a/slapos/tests/slapobject.py b/slapos/tests/slapobject.py
index c300204af8ea48f349217b1a8f84e95c3b7fa82a..551c0c22cab0832b5e80c8e441c2e76f8c48b62a 100644
--- a/slapos/tests/slapobject.py
+++ b/slapos/tests/slapobject.py
@@ -53,6 +53,7 @@ originalBootstrapBuildout = utils.bootstrapBuildout
 originalLaunchBuildout = utils.launchBuildout
 originalUploadSoftwareRelease = SlapObject.Software.uploadSoftwareRelease
 
+
 class TestSoftwareSlapObject(BasicMixin, unittest.TestCase):
   """
     Test for Software class.
@@ -92,17 +93,17 @@ class TestSoftwareSlapObject(BasicMixin, unittest.TestCase):
       Check if the networkcache parameters are propagated.
     """
     software = SlapObject.Software(
-            url='http://example.com/software.cfg',
-            software_root=self.software_root,
-            buildout=self.buildout,
-            logger=logging.getLogger(),
-            signature_private_key_file='/signature/private/key_file',
-            upload_cache_url='http://example.com/uploadcache',
-            upload_dir_url='http://example.com/uploaddir',
-            shacache_cert_file=self.shacache_cert_file,
-            shacache_key_file=self.shacache_key_file,
-            shadir_cert_file=self.shadir_cert_file,
-            shadir_key_file=self.shadir_key_file)
+        url='http://example.com/software.cfg',
+        software_root=self.software_root,
+        buildout=self.buildout,
+        logger=logging.getLogger(),
+        signature_private_key_file='/signature/private/key_file',
+        upload_cache_url='http://example.com/uploadcache',
+        upload_dir_url='http://example.com/uploaddir',
+        shacache_cert_file=self.shacache_cert_file,
+        shacache_key_file=self.shacache_key_file,
+        shadir_cert_file=self.shadir_cert_file,
+        shadir_key_file=self.shadir_key_file)
 
     software.install()
 
@@ -121,23 +122,21 @@ class TestSoftwareSlapObject(BasicMixin, unittest.TestCase):
       Check if the networkcache parameters are not propagated if they are not
       available.
     """
-    software = SlapObject.Software(
-            url='http://example.com/software.cfg',
-            software_root=self.software_root,
-            buildout=self.buildout,
-            logger=logging.getLogger())
-
+    software = SlapObject.Software(url='http://example.com/software.cfg',
+                                   software_root=self.software_root,
+                                   buildout=self.buildout,
+                                   logger=logging.getLogger())
     software.install()
 
     command_list = FakeCallAndRead.external_command_list
-    self.assertFalse('buildout:networkcache-section=networkcache'
-                    in command_list)
-    self.assertFalse('networkcache:signature-private-key-file=%s' %
-                    self.signature_private_key_file in command_list)
-    self.assertFalse('networkcache:upload-cache-url=%s' % self.upload_cache_url
-                    in command_list)
-    self.assertFalse('networkcache:upload-dir-url=%s' % self.upload_dir_url
-                    in command_list)
+    self.assertNotIn('buildout:networkcache-section=networkcache', command_list)
+    self.assertNotIn('networkcache:signature-private-key-file=%s' %
+                     self.signature_private_key_file,
+                     command_list)
+    self.assertNotIn('networkcache:upload-cache-url=%s' % self.upload_cache_url,
+                     command_list)
+    self.assertNotIn('networkcache:upload-dir-url=%s' % self.upload_dir_url,
+                     command_list)
 
   # XXX-Cedric: do the same with upload
   def test_software_install_networkcache_upload_blacklist(self):
@@ -146,27 +145,30 @@ class TestSoftwareSlapObject(BasicMixin, unittest.TestCase):
     """
     def fakeBuildout(*args, **kw):
       pass
+
     SlapObject.Software._install_from_buildout = fakeBuildout
+
     def fake_upload_network_cached(*args, **kw):
       self.assertFalse(True)
+
     networkcache.upload_network_cached = fake_upload_network_cached
 
     upload_to_binary_cache_url_blacklist = ["http://example.com"]
 
     software = SlapObject.Software(
-            url='http://example.com/software.cfg',
-            software_root=self.software_root,
-            buildout=self.buildout,
-            logger=logging.getLogger(),
-            signature_private_key_file='/signature/private/key_file',
-            upload_cache_url='http://example.com/uploadcache',
-            upload_dir_url='http://example.com/uploaddir',
-            shacache_cert_file=self.shacache_cert_file,
-            shacache_key_file=self.shacache_key_file,
-            shadir_cert_file=self.shadir_cert_file,
-            shadir_key_file=self.shadir_key_file,
-            upload_to_binary_cache_url_blacklist=\
-                upload_to_binary_cache_url_blacklist,
+        url='http://example.com/software.cfg',
+        software_root=self.software_root,
+        buildout=self.buildout,
+        logger=logging.getLogger(),
+        signature_private_key_file='/signature/private/key_file',
+        upload_cache_url='http://example.com/uploadcache',
+        upload_dir_url='http://example.com/uploaddir',
+        shacache_cert_file=self.shacache_cert_file,
+        shacache_key_file=self.shacache_key_file,
+        shadir_cert_file=self.shadir_cert_file,
+        shadir_key_file=self.shadir_key_file,
+        upload_to_binary_cache_url_blacklist=
+            upload_to_binary_cache_url_blacklist,
     )
     software.install()
 
@@ -178,29 +180,30 @@ class TestSoftwareSlapObject(BasicMixin, unittest.TestCase):
     def fakeBuildout(*args, **kw):
       pass
     SlapObject.Software._install_from_buildout = fakeBuildout
+
     def fakeUploadSoftwareRelease(*args, **kw):
       self.uploaded = True
-    SlapObject.Software.uploadSoftwareRelease = fakeUploadSoftwareRelease
 
+    SlapObject.Software.uploadSoftwareRelease = fakeUploadSoftwareRelease
 
     upload_to_binary_cache_url_blacklist = ["http://anotherexample.com"]
 
     software = SlapObject.Software(
-            url='http://example.com/software.cfg',
-            software_root=self.software_root,
-            buildout=self.buildout,
-            logger=logging.getLogger(),
-            signature_private_key_file='/signature/private/key_file',
-            upload_cache_url='http://example.com/uploadcache',
-            upload_dir_url='http://example.com/uploaddir',
-            upload_binary_cache_url='http://example.com/uploadcache',
-            upload_binary_dir_url='http://example.com/uploaddir',
-            shacache_cert_file=self.shacache_cert_file,
-            shacache_key_file=self.shacache_key_file,
-            shadir_cert_file=self.shadir_cert_file,
-            shadir_key_file=self.shadir_key_file,
-            upload_to_binary_cache_url_blacklist=\
-                upload_to_binary_cache_url_blacklist,
+        url='http://example.com/software.cfg',
+        software_root=self.software_root,
+        buildout=self.buildout,
+        logger=logging.getLogger(),
+        signature_private_key_file='/signature/private/key_file',
+        upload_cache_url='http://example.com/uploadcache',
+        upload_dir_url='http://example.com/uploaddir',
+        upload_binary_cache_url='http://example.com/uploadcache',
+        upload_binary_dir_url='http://example.com/uploaddir',
+        shacache_cert_file=self.shacache_cert_file,
+        shacache_key_file=self.shacache_key_file,
+        shadir_cert_file=self.shadir_cert_file,
+        shadir_key_file=self.shadir_key_file,
+        upload_to_binary_cache_url_blacklist=
+            upload_to_binary_cache_url_blacklist,
     )
     software.install()
     self.assertTrue(getattr(self, 'uploaded', False))
diff --git a/slapos/tests/slapproxy.py b/slapos/tests/slapproxy.py
index 0f189070eb8230137bcc997e6c87c2ea8b90cd31..7977e08f24e2cfb89d5bad46ccb869948924f86f 100644
--- a/slapos/tests/slapproxy.py
+++ b/slapos/tests/slapproxy.py
@@ -31,27 +31,31 @@ import ConfigParser
 import os
 import logging
 import shutil
-import slapos.proxy
-import slapos.proxy.views as views
-import slapos.slap.slap
 import tempfile
 import unittest
 import xml_marshaller
 
+import slapos.proxy
+import slapos.proxy.views as views
+import slapos.slap.slap
+
+
 class WrongFormat(Exception):
   pass
 
-class ProxyOption:
+
+class ProxyOption(object):
   """
   Will simulate options given to slapproxy
   """
   def __init__(self, proxy_db):
-    self.verbose=True
-    self.database_uri=proxy_db
+    self.verbose = True
+    self.database_uri = proxy_db
     self.console = False
     self.log_file = None
 
-class BasicMixin:
+
+class BasicMixin(object):
   def setUp(self):
     """
     Will set files and start slapproxy
@@ -78,8 +82,8 @@ computer_id = computer
 host = 127.0.0.1
 port = 8080
 database_uri = %(tempdir)s/lib/proxy.db
-"""% dict (tempdir = self._tempdir, proxyaddr = self.proxyaddr))
-    for directory in ("opt", "srv", "lib"):
+""" % {'tempdir': self._tempdir, 'proxyaddr': self.proxyaddr})
+    for directory in ['opt', 'srv', 'lib']:
       path = os.path.join(self._tempdir, directory)
       os.mkdir(path)
 
@@ -99,26 +103,30 @@ database_uri = %(tempdir)s/lib/proxy.db
     views.app.config['port'] = conf.port
     self.app = views.app.test_client()
 
-  def add_free_partition (self, partition_amount):
+  def add_free_partition(self, partition_amount):
     """
     Will simulate a slapformat first run
     and create "partition_amount" partitions
     """
-    computer_dict = {'reference':self.computer_id,
-                     'address':'123.456.789',
-                     'netmask':'fffffffff',
-                     'partition_list':[]}
-    for i in range(0, partition_amount):
-      partition_example = {'reference':'slappart%s' %i,
-                           'address_list':[]}
+    computer_dict = {
+        'reference': self.computer_id,
+        'address': '123.456.789',
+        'netmask': 'fffffffff',
+        'partition_list': [],
+    }
+    for i in range(partition_amount):
+      partition_example = {
+          'reference': 'slappart%s' % i,
+          'address_list': [],
+      }
       computer_dict['partition_list'].append(partition_example)
 
-    request_dict = { 'computer_id': self.computer_id,
-                     'xml': xml_marshaller.xml_marshaller.dumps(computer_dict),
-                     }
+    request_dict = {
+        'computer_id': self.computer_id,
+        'xml': xml_marshaller.xml_marshaller.dumps(computer_dict),
+    }
     self.app.post('/loadComputerConfigurationFromXML',
-                       data = request_dict)
-
+                  data=request_dict)
 
   def tearDown(self):
     """
@@ -132,46 +140,42 @@ class TestInformation(BasicMixin, unittest.TestCase):
   Test Basic response of slapproxy
   """
 
-  def test_getComputerInformation (self):
+  def test_getComputerInformation(self):
     """
     Check that getComputerInformation return a Computer
     and database is generated
     """
-    rv = self.app.get('/getComputerInformation?computer_id='
-                      +self.computer_id)
+    rv = self.app.get('/getComputerInformation?computer_id=%s' % self.computer_id)
     self.assertIsInstance(
-      xml_marshaller.xml_marshaller.loads(rv.data),
-      slapos.slap.Computer)
+        xml_marshaller.xml_marshaller.loads(rv.data),
+        slapos.slap.Computer)
     self.assertTrue(os.path.exists(self.proxy_db))
 
-  def test_getFullComputerInformation (self):
+  def test_getFullComputerInformation(self):
     """
     Check that getFullComputerInformation return a Computer
     and database is generated
     """
-    rv = self.app.get('/getFullComputerInformation?computer_id='
-                      + self.computer_id)
+    rv = self.app.get('/getFullComputerInformation?computer_id=%s' % self.computer_id)
     self.assertIsInstance(
-      xml_marshaller.xml_marshaller.loads(rv.data),
-      slapos.slap.Computer)
+        xml_marshaller.xml_marshaller.loads(rv.data),
+        slapos.slap.Computer)
     self.assertTrue(os.path.exists(self.proxy_db))
 
-  def test_getComputerInformation_wrong_computer (self):
+  def test_getComputerInformation_wrong_computer(self):
     """
     Test that computer information won't be given to a requester different
     from the one specified
     """
     with self.assertRaises(slapos.slap.NotFoundError):
-      self.app.get('/getComputerInformation?computer_id='
-                      + self.computer_id + '42')
+      self.app.get('/getComputerInformation?computer_id=%s42' % self.computer_id)
 
-  def test_partition_are_empty (self):
+  def test_partition_are_empty(self):
     """
     Test that empty partition are empty :)
     """
     self.add_free_partition(10)
-    rv = self.app.get('/getFullComputerInformation?computer_id='
-                      + self.computer_id)
+    rv = self.app.get('/getFullComputerInformation?computer_id=%s' % self.computer_id)
     computer = xml_marshaller.xml_marshaller.loads(rv.data)
     for slap_partition in computer._computer_partition_list:
         self.assertIsNone(slap_partition._software_release_document)
@@ -179,7 +183,6 @@ class TestInformation(BasicMixin, unittest.TestCase):
         self.assertEqual(slap_partition._need_modification, 0)
 
 
-
 class MasterMixin(BasicMixin):
   """
   Define advanced tool for test proxy simulating behavior slap library tools
@@ -197,23 +200,24 @@ class MasterMixin(BasicMixin):
       partition_parameter_kw = {}
     if filter_kw is None:
       filter_kw = {}
-   # Let enforce a default software type
+   # Let's enforce a default software type
     if software_type is None:
       software_type = 'default'
 
-    request_dict = { 'computer_id': self.computer_id,
+    request_dict = {
+        'computer_id': self.computer_id,
         'computer_partition_id': partition_id,
         'software_release': software_release,
         'software_type': software_type,
         'partition_reference': partition_reference,
         'shared_xml': xml_marshaller.xml_marshaller.dumps(shared),
         'partition_parameter_xml': xml_marshaller.xml_marshaller.dumps(
-                                        partition_parameter_kw),
+            partition_parameter_kw),
         'filter_xml': xml_marshaller.xml_marshaller.dumps(filter_kw),
         'state': xml_marshaller.xml_marshaller.dumps(state),
-      }
+    }
     rv = self.app.post('/requestComputerPartition',
-                       data = request_dict)
+                       data=request_dict)
     xml = rv.data
     try:
       software_instance = xml_marshaller.xml_marshaller.loads(xml)
@@ -221,43 +225,40 @@ class MasterMixin(BasicMixin):
       raise WrongFormat("Could not be parsed by xml_marshaller")
 
     computer_partition = slapos.slap.ComputerPartition(
-      software_instance.slap_computer_id,
-      software_instance.slap_computer_partition_id,
-      )
+        software_instance.slap_computer_id,
+        software_instance.slap_computer_partition_id)
     if shared:
       computer_partition._synced = True
       computer_partition._connection_dict = getattr(software_instance,
-                                                  '_connection_dict', None)
+                                                    '_connection_dict', None)
       computer_partition._parameter_dict = getattr(software_instance,
-                                                 '_parameter_dict', None)
+                                                   '_parameter_dict', None)
     return computer_partition
 
-
   def setConnectionDict(self, partition_id,
                         connection_dict, slave_reference=None):
-    self.app.post('/setComputerPartitionConnectionXml', data = {
+    self.app.post('/setComputerPartitionConnectionXml', data={
         'computer_id': self.computer_id,
         'computer_partition_id': partition_id,
         'connection_xml': xml_marshaller.xml_marshaller.dumps(connection_dict),
         'slave_reference': slave_reference})
 
-  def getPartitionInformation(self,computer_partition_id):
+  def getPartitionInformation(self, computer_partition_id):
     """
     Return computer information as stored in proxy for corresponding id
     """
-    rv = self.app.get('/getFullComputerInformation?computer_id='
-                      + self.computer_id)
+    rv = self.app.get('/getFullComputerInformation?computer_id=%s' % self.computer_id)
     computer = xml_marshaller.xml_marshaller.loads(rv.data)
     for instance in computer._computer_partition_list:
       if instance._partition_id == computer_partition_id:
         return instance
 
 
-class TestRequest (MasterMixin, unittest.TestCase):
+class TestRequest(MasterMixin, unittest.TestCase):
   """
   Set of tests for requests
   """
-  def test_two_request_one_partition_free (self):
+  def test_two_request_one_partition_free(self):
     """
     Since slapproxy does not implement scope, providing two partition_id
     values will still succeed, even if only one partition is available.
@@ -270,7 +271,7 @@ class TestRequest (MasterMixin, unittest.TestCase):
                                        'Maria', 'slappart3'),
                           slapos.slap.ComputerPartition)
 
-  def test_two_request_two_partition_free (self):
+  def test_two_request_two_partition_free(self):
     """
     If two requests are made with two available partition
     both will succeed
@@ -283,16 +284,16 @@ class TestRequest (MasterMixin, unittest.TestCase):
                                        'Maria', 'slappart3'),
                           slapos.slap.ComputerPartition)
 
-  def test_two_same_request_from_one_partition (self):
+  def test_two_same_request_from_one_partition(self):
     """
     Request will return same partition for two equal requests
     """
     self.add_free_partition(2)
     self.assertEqual(
-      self.request('http://sr//', None, 'Maria', 'slappart2').__dict__,
-      self.request('http://sr//', None, 'Maria', 'slappart2').__dict__)
+        self.request('http://sr//', None, 'Maria', 'slappart2').__dict__,
+        self.request('http://sr//', None, 'Maria', 'slappart2').__dict__)
 
-  def test_two_requests_with_different_parameters_but_same_reference (self):
+  def test_two_requests_with_different_parameters_but_same_reference(self):
     """
     Request will return same partition for two different requests but will
     only update parameters
@@ -302,25 +303,25 @@ class TestRequest (MasterMixin, unittest.TestCase):
     wanted_domain2 = 'carzy.org'
 
     request1 = self.request('http://sr//', None, 'Maria', 'slappart2',
-                            partition_parameter_kw = {'domain':wanted_domain1})
+                            partition_parameter_kw={'domain': wanted_domain1})
     request1_dict = request1.__dict__
     requested_result1 = self.getPartitionInformation(
-      request1_dict['_partition_id'])
+        request1_dict['_partition_id'])
     request2 = self.request('http://sr1//', 'Papa', 'Maria', 'slappart2',
-                            partition_parameter_kw = {'domain':wanted_domain2})
+                            partition_parameter_kw={'domain': wanted_domain2})
     request2_dict = request2.__dict__
     requested_result2 = self.getPartitionInformation(
-      request2_dict['_partition_id'])
+        request2_dict['_partition_id'])
     # Test we received same partition
     for key in request1_dict:
-      self.assertEqual(request1_dict[key],request2_dict[key])
+      self.assertEqual(request1_dict[key], request2_dict[key])
     # Test that only parameters changed
-    for key in requested_result2.__dict__ :
-      if not key in ('_parameter_dict',
-                     '_software_release_document'):
+    for key in requested_result2.__dict__:
+      if key not in ['_parameter_dict',
+                     '_software_release_document']:
         self.assertEqual(requested_result2.__dict__[key],
                          requested_result1.__dict__[key])
-      elif key in ('_software_release_document'):
+      elif key in ['_software_release_document']:
         self.assertEqual(requested_result2.__dict__[key].__dict__,
                          requested_result1.__dict__[key].__dict__)
     #Test parameters where set correctly
@@ -329,27 +330,27 @@ class TestRequest (MasterMixin, unittest.TestCase):
     self.assertEqual(wanted_domain2,
                      requested_result2._parameter_dict['domain'])
 
-  def test_two_different_request_from_two_partition (self):
+  def test_two_different_request_from_two_partition(self):
     """
     Since slapproxy does not implement scope, two request with
     different partition_id will still return the same partition.
     """
     self.add_free_partition(2)
     self.assertEqual(
-      self.request('http://sr//', None, 'Maria', 'slappart2').__dict__,
-      self.request('http://sr//', None, 'Maria', 'slappart3').__dict__)
+        self.request('http://sr//', None, 'Maria', 'slappart2').__dict__,
+        self.request('http://sr//', None, 'Maria', 'slappart3').__dict__)
 
-  def test_two_different_request_from_one_partition (self):
+  def test_two_different_request_from_one_partition(self):
     """
     Two different request from same partition
     will return two different partitions
     """
     self.add_free_partition(2)
     self.assertNotEqual(
-      self.request('http://sr//', None, 'Maria', 'slappart2').__dict__,
-      self.request('http://sr//', None, 'frontend', 'slappart2').__dict__)
+        self.request('http://sr//', None, 'Maria', 'slappart2').__dict__,
+        self.request('http://sr//', None, 'frontend', 'slappart2').__dict__)
 
-  def test_slave_request_no_corresponding_partition (self):
+  def test_slave_request_no_corresponding_partition(self):
     """
     Slave instance request will fail if no corresponding are found
     """
@@ -357,7 +358,7 @@ class TestRequest (MasterMixin, unittest.TestCase):
     with self.assertRaises(WrongFormat):
       self.request('http://sr//', None, 'Maria', 'slappart2', shared=True)
 
-  def test_slave_request_set_parameters (self):
+  def test_slave_request_set_parameters(self):
     """
     Parameters sent in slave request must be put in slave master
     slave instance list.
@@ -368,18 +369,18 @@ class TestRequest (MasterMixin, unittest.TestCase):
     self.add_free_partition(6)
     # Provide partition
     master_partition_id = self.request('http://sr//', None,
-                                    'Maria', 'slappart4')._partition_id
+                                       'Maria', 'slappart4')._partition_id
     # First request of slave instance
     wanted_domain = 'fou.org'
     self.request('http://sr//', None, 'Maria', 'slappart2', shared=True,
-                 partition_parameter_kw = {'domain':wanted_domain})
+                 partition_parameter_kw={'domain': wanted_domain})
     # Get updated information for master partition
     master_partition = self.getPartitionInformation(master_partition_id)
 
     our_slave = master_partition._parameter_dict['slave_instance_list'][0]
-    self.assertEqual(our_slave.get('domain'),wanted_domain)
+    self.assertEqual(our_slave.get('domain'), wanted_domain)
 
-  def test_slave_request_set_parameters_are_updated (self):
+  def test_slave_request_set_parameters_are_updated(self):
     """
     Parameters sent in slave request must be put in slave master
     slave instance list and updated when they change.
@@ -393,29 +394,28 @@ class TestRequest (MasterMixin, unittest.TestCase):
     self.add_free_partition(6)
     # Provide partition
     master_partition_id = self.request('http://sr//', None,
-                                    'Maria', 'slappart4')._partition_id
+                                       'Maria', 'slappart4')._partition_id
     # First request of slave instance
     wanted_domain_1 = 'crazy.org'
     self.request('http://sr//', None, 'Maria', 'slappart2', shared=True,
-                 partition_parameter_kw = {'domain':wanted_domain_1})
+                 partition_parameter_kw={'domain': wanted_domain_1})
     # Get updated information for master partition
     master_partition = self.getPartitionInformation(master_partition_id)
     our_slave = master_partition._parameter_dict['slave_instance_list'][0]
-    self.assertEqual(our_slave.get('domain'),wanted_domain_1)
+    self.assertEqual(our_slave.get('domain'), wanted_domain_1)
 
     # Second request of slave instance
     wanted_domain_2 = 'maluco.org'
     self.request('http://sr//', None, 'Maria', 'slappart2', shared=True,
-                 partition_parameter_kw = {'domain':wanted_domain_2})
+                 partition_parameter_kw={'domain': wanted_domain_2})
     # Get updated information for master partition
     master_partition = self.getPartitionInformation(master_partition_id)
 
     our_slave = master_partition._parameter_dict['slave_instance_list'][0]
-    self.assertNotEqual(our_slave.get('domain'),wanted_domain_1)
-    self.assertEqual(our_slave.get('domain'),wanted_domain_2)
-
+    self.assertNotEqual(our_slave.get('domain'), wanted_domain_1)
+    self.assertEqual(our_slave.get('domain'), wanted_domain_2)
 
-  def test_slave_request_one_corresponding_partition (self):
+  def test_slave_request_one_corresponding_partition(self):
     """
     Successfull request slave instance follow these steps:
     1. Provide one corresponding partition
@@ -429,24 +429,24 @@ class TestRequest (MasterMixin, unittest.TestCase):
     self.add_free_partition(6)
     # Provide partition
     master_partition_id = self.request('http://sr//', None,
-                                    'Maria', 'slappart4')._partition_id
+                                       'Maria', 'slappart4')._partition_id
     # First request of slave instance
     name = 'Maria'
     requester = 'slappart2'
-    our_slave  = self.request('http://sr//', None,
-                              name, requester, shared=True)
+    our_slave = self.request('http://sr//', None,
+                             name, requester, shared=True)
     self.assertIsInstance(our_slave, slapos.slap.ComputerPartition)
-    self.assertEqual(our_slave._connection_dict,{})
+    self.assertEqual(our_slave._connection_dict, {})
     # Get updated information for master partition
     master_partition = self.getPartitionInformation(master_partition_id)
     slave_for_master = master_partition._parameter_dict['slave_instance_list'][0]
     # Send information about slave
-    slave_address = {'url':'%s.master.com'}
+    slave_address = {'url': '%s.master.com'}
     self.setConnectionDict(partition_id=master_partition._partition_id,
                            connection_dict=slave_address,
                            slave_reference=slave_for_master['slave_reference'])
     # Successfull slave request with connection parameters
-    our_slave  = self.request('http://sr//', None,
-                              name, requester, shared=True)
+    our_slave = self.request('http://sr//', None,
+                             name, requester, shared=True)
     self.assertIsInstance(our_slave, slapos.slap.ComputerPartition)
     self.assertEqual(slave_address, our_slave._connection_dict)
diff --git a/slapos/tests/util.py b/slapos/tests/util.py
index 8af878e5d811abe6dd8ead88ade8630e85484270..510027be0ddbccab9d9575881ce89b8918ad4f9b 100644
--- a/slapos/tests/util.py
+++ b/slapos/tests/util.py
@@ -29,6 +29,7 @@ import slapos.util
 import tempfile
 import unittest
 
+
 class TestMkdirP(unittest.TestCase):
   """
   Tests methods available in the slapos.util module.