Fix Pep8 issues related to \

JIRA: FUNCTEST-630

Change-Id: I2b6d3bec67c6fe290fb2ad795a54a2dd2e3c7a0b
Signed-off-by: Morgan Richomme <morgan.richomme@orange.com>

8 files changed, 123 insertions, 102 deletions

diff --git a/functest/opnfv_tests/features/domino.py b/functest/opnfv_tests/features/domino.py
index 45b93e7b..341648f4 100755
--- a/functest/opnfv_tests/features/domino.py
+++ b/functest/opnfv_tests/features/domino.py
@@ -26,10 +26,8 @@ import functest.utils.functest_utils as ft_utils
 
 
 class DominoCases(testcase_base.TestcaseBase):
-    DOMINO_REPO = \
-        ft_constants.DOMINO_REPO_DIR
-    RESULTS_DIR = \
-        ft_constants.FUNCTEST_RESULTS_DIR
+    DOMINO_REPO = ft_constants.DOMINO_REPO_DIR
+    RESULTS_DIR = ft_constants.FUNCTEST_RESULTS_DIR
     logger = ft_logger.Logger("domino").getLogger()
 
     def __init__(self):
diff --git a/functest/opnfv_tests/openstack/examples/create_instance_and_ip.py b/functest/opnfv_tests/openstack/examples/create_instance_and_ip.py
index 6a2abe60..b4e2e519 100755
--- a/functest/opnfv_tests/openstack/examples/create_instance_and_ip.py
+++ b/functest/opnfv_tests/openstack/examples/create_instance_and_ip.py
@@ -11,7 +11,9 @@
 #
 
 import argparse
+import os
 import sys
+
 import functest.utils.functest_logger as ft_logger
 import functest.utils.openstack_utils as os_utils
 import functest.utils.functest_constants as ft_constants
@@ -36,8 +38,7 @@ EXAMPLE_FLAVOR = ft_constants.EXAMPLE_FLAVOR
 EXAMPLE_IMAGE_NAME = ft_constants.EXAMPLE_IMAGE_NAME
 IMAGE_FILENAME = ft_constants.GLANCE_IMAGE_FILENAME
 IMAGE_FORMAT = ft_constants.GLANCE_IMAGE_FORMAT
-IMAGE_PATH = ft_constants.FUNCTEST_DATA_DIR + \
-    "/" + IMAGE_FILENAME
+IMAGE_PATH = os.path.join(ft_constants.FUNCTEST_DATA_DIR, IMAGE_FILENAME)
 
 # NEUTRON Private Network parameters
 
diff --git a/functest/opnfv_tests/openstack/tempest/gen_tempest_conf.py b/functest/opnfv_tests/openstack/tempest/gen_tempest_conf.py
index 8e298d36..1216a671 100755
--- a/functest/opnfv_tests/openstack/tempest/gen_tempest_conf.py
+++ b/functest/opnfv_tests/openstack/tempest/gen_tempest_conf.py
@@ -50,8 +50,8 @@ def configure_tempest_multisite(deployment_dir):
     config.read(tempest_conf_file)
 
     config.set('service_available', 'kingbird', 'true')
-    cmd = "openstack endpoint show kingbird | grep publicurl |\
-           awk '{print $4}' | awk -F '/' '{print $4}'"
+    cmd = ("openstack endpoint show kingbird | grep publicurl |"
+           "awk '{print $4}' | awk -F '/' '{print $4}'")
     kingbird_api_version = os.popen(cmd).read()
     if CI_INSTALLER_TYPE == 'fuel':
         # For MOS based setup, the service is accessible
@@ -66,8 +66,8 @@ def configure_tempest_multisite(deployment_dir):
             "multisite." + installer_type +
             "_environment.installer_password")
 
-        ssh_options = "-o UserKnownHostsFile=/dev/null -o \
-            StrictHostKeyChecking=no"
+        ssh_options = ("-o UserKnownHostsFile=/dev/null -o "
+                       "StrictHostKeyChecking=no")
 
         # Get the controller IP from the fuel node
         cmd = 'sshpass -p %s ssh 2>/dev/null %s %s@%s \
@@ -76,8 +76,7 @@ def configure_tempest_multisite(deployment_dir):
                                                ssh_options,
                                                installer_username,
                                                installer_ip)
-        multisite_controller_ip = \
-            "".join(os.popen(cmd).read().split())
+        multisite_controller_ip = "".join(os.popen(cmd).read().split())
 
         # Login to controller and get bind host details
         cmd = 'sshpass -p %s ssh 2>/dev/null  %s %s@%s "ssh %s \\" \
@@ -94,8 +93,7 @@ def configure_tempest_multisite(deployment_dir):
         # Extract ip address from the bind details
         bind_host = re.findall(r"\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}",
                                bind_details)[0]
-        kingbird_endpoint_url = "http://" + bind_host + ":" + bind_port + \
-                                "/"
+        kingbird_endpoint_url = "http://%s:%s/" % (bind_host, bind_port)
     else:
         cmd = "openstack endpoint show kingbird | grep publicurl |\
                awk '{print $4}' | awk -F '/' '{print $3}'"
diff --git a/functest/opnfv_tests/openstack/tempest/run_tempest.py b/functest/opnfv_tests/openstack/tempest/run_tempest.py
index cbf92c1f..6406cd19 100755
--- a/functest/opnfv_tests/openstack/tempest/run_tempest.py
+++ b/functest/opnfv_tests/openstack/tempest/run_tempest.py
@@ -62,8 +62,9 @@ logger = ft_logger.Logger("run_tempest").getLogger()
 GLANCE_IMAGE_NAME = ft_constants.GLANCE_IMAGE_NAME
 GLANCE_IMAGE_FILENAME = ft_constants.GLANCE_IMAGE_FILENAME
 GLANCE_IMAGE_FORMAT = ft_constants.GLANCE_IMAGE_FORMAT
-GLANCE_IMAGE_PATH = ft_constants.FUNCTEST_DATA_DIR + \
-    "/" + GLANCE_IMAGE_FILENAME
+GLANCE_IMAGE_PATH = os.path.join(ft_constants.FUNCTEST_DATA_DIR,
+                                 GLANCE_IMAGE_FILENAME)
+
 IMAGE_ID_ALT = None
 
 FLAVOR_NAME = ft_constants.FLAVOR_NAME
diff --git a/functest/opnfv_tests/sdn/onos/sfc/sfc_onos.py b/functest/opnfv_tests/sdn/onos/sfc/sfc_onos.py
index 78bf6f4b..8ca32e9b 100644
--- a/functest/opnfv_tests/sdn/onos/sfc/sfc_onos.py
+++ b/functest/opnfv_tests/sdn/onos/sfc/sfc_onos.py
@@ -57,8 +57,8 @@ class SfcOnos:
         self.container_format = "bare"
         self.disk_format = "qcow2"
         self.imagename = "TestSfcVm"
-        self.createImage = "/home/root1/devstack/files/images/\
-                            firewall_block_image.img"
+        self.createImage = ("/home/root1/devstack/files/images/"
+                            "firewall_block_image.img")
 
         self.vm_name = "vm"
         self.imageRef = "test"
@@ -107,10 +107,10 @@ class SfcOnos:
 
     def getToken(self):
         """Get the keystone token value from Openstack ."""
-        url = 'http://' + self.keystone_hostname + \
-            ':5000/' + self.osver + '/tokens'
-        data = '{"auth": {"tenantName": "admin",  "passwordCredentials":\
-               { "username": "admin", "password": "console"}}}'
+        url = 'http://%s:5000/%s/tokens' % (self.keystone_hostname,
+                                            self.osver)
+        data = ('{"auth": {"tenantName": "admin", "passwordCredentials":'
+                '{ "username": "admin", "password": "console"}}}')
         headers = {"Accept": "application/json"}
         response = requests.post(url, headers=headers,  data=data)
         if (response.status_code == OK):
@@ -133,8 +133,8 @@ class SfcOnos:
             Dicdata['admin_state_up'] = self.admin_state_up
         Dicdata = {'network': Dicdata}
         data = json.dumps(Dicdata,  indent=4)
-        url = 'http://' + self.neutron_hostname + \
-            ':9696/' + self.osver + '/networks'
+        url = 'http://%s:9696/%s/networks' % (self.neutron_hostname,
+                                              self.osver)
         headers = {"Accept": "application/json",
                    "X-Auth-Token": self.token_id}
         response = requests.post(url, headers=headers,  data=data)
@@ -163,8 +163,8 @@ class SfcOnos:
 
         Dicdata = {'subnet': Dicdata}
         data = json.dumps(Dicdata, indent=4)
-        url = 'http://' + self.neutron_hostname + \
-            ':9696/' + self.osver + '/subnets'
+        url = 'http://%s:9696/%s/subnets' % (self.neutron_hostname,
+                                             self.osver)
         headers = {"Accept": "application/json",
                    "X-Auth-Token": self.token_id}
         response = requests.post(url, headers=headers,  data=data)
@@ -196,8 +196,8 @@ class SfcOnos:
 
             Dicdata = {'port': Dicdata}
             data = json.dumps(Dicdata, indent=4)
-            url = 'http://' + self.neutron_hostname + \
-                ':9696/' + self.osver + '/ports'
+            url = 'http://%s:9696/%s/ports' % (self.neutron_hostname,
+                                               self.osver)
             headers = {"Accept": "application/json",
                        "X-Auth-Token": self.token_id}
             response = requests.post(url, headers=headers,  data=data)
@@ -217,8 +217,8 @@ class SfcOnos:
 
     def createVm(self):
         """Creation of Instance, using  firewall image."""
-        url = 'http://' + self.glance_hostname + \
-            ':9292/v2/images?name=TestSfcVm'
+        url = ("http://%s:9292/v2/images?"
+               "name=TestSfcVm" % (self.glance_hostname))
         headers = {"Accept": "application/json", "Content-Type": "application/\
                     octet-stream",  "X-Auth-Token": self.token_id}
         response = requests.get(url, headers=headers)
@@ -232,8 +232,10 @@ class SfcOnos:
         else:
             return(response.status_code)
 
-        url = 'http://' + self.nova_hostname + \
-            ':8774/v2.1/' + self.tenant_id + '/flavors?name=m1.tiny'
+        url = ("http://%s:8774//v2.1/%s/ports/"
+               "%s/flavors?name=m1.tiny" % (self.nova_hostname,
+                                            self.tenant_id))
+
         headers = {"Accept": "application/json", "Content-Type":
                    "application/json", "X-Auth-Token": self.token_id}
         response = requests.get(url, headers=headers)
@@ -266,9 +268,8 @@ class SfcOnos:
                 Dicdata['networks'] = org_nw_port
             Dicdata = {'server': Dicdata}
             data = json.dumps(Dicdata, indent=4)
-
-            url = ('http://' + self.nova_hostname + ':8774/v2.1/' +
-                   self.tenant_id + '/servers')
+            url = 'http://%s:8774/v2.1/%s/servers' % (self.nova_hostname,
+                                                      self.tenant_id)
             headers = {"Accept": "application/json", "Content-Type":
                        "application/json", "X-Auth-Token": self.token_id}
             response = requests.post(url, headers=headers,  data=data)
@@ -291,9 +292,8 @@ class SfcOnos:
         """Checking the Status of the Instance."""
         time.sleep(10)
         for y in range(0, 3):
-            url = 'http://' + \
-                  self.nova_hostname + \
-                ':8774/v2.1/servers/detail?name=vm' + str(y)
+            url = ("http://%s:8774/v2.1/servers/"
+                   "detail?name=vm" + str(y)) % (self.neutron_hostname)
             headers = {"Accept": "application/json",  "X-Auth-Token":
                        self.token_id}
             response = requests.get(url, headers=headers)
@@ -304,11 +304,9 @@ class SfcOnos:
                 self.logger.debug(json1_data)
                 self.vm_active = json1_data['servers'][0]['status']
                 if (self.vm_active == "ACTIVE"):
-                    info = "VM" + str(y) + \
-                        " is Active : " + self.vm_active
+                    info = "VM" + str(y) + " is Active : " + self.vm_active
                 else:
-                    info = "VM" + str(y) + " is NOT Active : " + \
-                        self.vm_active
+                    info = "VM" + str(y) + " is NOT Active : " + self.vm_active
                 self.logger.debug(info)
             else:
                 return(response.status_code)
@@ -329,15 +327,14 @@ class SfcOnos:
 
             Dicdata = {'port_pair': Dicdata}
             data = json.dumps(Dicdata, indent=4)
-
-            url = 'http://' + self.neutron_hostname + ':9696/' + self.osver + \
-                '/sfc/port_pairs'
+            url = 'http://%s:9696/%s/sfc/port_pairs' % (self.neutron_hostname,
+                                                        self.osver)
             headers = {"Accept": "application/json", "X-Auth-Token":
                        self.token_id}
             response = requests.post(url, headers=headers,  data=data)
             if (response.status_code == CREATED):
-                info = "Creation of Port Pair PP" + str(p) + \
-                       " is successful"
+                info = ("Creation of Port Pair PP" + str(p) +
+                        " is successful")
                 self.logger.debug(info)
             else:
                 return(response.status_code)
@@ -347,10 +344,11 @@ class SfcOnos:
     def getPortPair(self):
         """Query the Portpair id value."""
         for p in range(0, 1):
-            url = 'http://' + self.neutron_hostname + ':9696/' + self.osver + \
-                  '/sfc/port_pairs?name=PP1'
-            headers = {"Accept": "application/json", "X-Auth-Token":
-                       self.token_id}
+            url = ("http://%s:9696/%s/ports/"
+                   "sfc/port_pairs?name=PP1" % (self.neutron_hostname,
+                                                self.osver))
+            headers = {"Accept": "application/json",
+                       "X-Auth-Token": self.token_id}
             response = requests.get(url, headers=headers)
 
             if (response.status_code == OK):
@@ -376,14 +374,15 @@ class SfcOnos:
 
             Dicdata = {'port_pair_group': Dicdata}
             data = json.dumps(Dicdata, indent=4)
-            url = 'http://' + self.neutron_hostname + ':9696/' + self.osver + \
-                  '/sfc/port_pair_groups'
+            url = ("http://%s:9696/%s/"
+                   "sfc/port_pair_groups" % (self.neutron_hostname,
+                                             self.osver))
             headers = {"Accept": "application/json", "X-Auth-Token":
                        self.token_id}
             response = requests.post(url, headers=headers,  data=data)
             if (response.status_code == CREATED):
-                info = "Creation of Port Group PG" + str(p) + \
-                    "is successful"
+                info = ("Creation of Port Group PG" + str(p) +
+                        "is successful")
                 self.logger.debug(info)
             else:
                 return(response.status_code)
@@ -393,8 +392,9 @@ class SfcOnos:
     def getPortGroup(self):
         """Query the PortGroup id."""
         for p in range(0, 1):
-            url = 'http://' + self.neutron_hostname + ':9696/' + self.osver + \
-                  '/sfc/port_pair_groups?name=PG' + str(p)
+            url = ("http://%s:9696/%s/sfc/port_pair_groups"
+                   "?name=PG" + str(p)) % (self.neutron_hostname,
+                                           self.osver)
             headers = {"Accept": "application/json", "X-Auth-Token":
                        self.token_id}
             response = requests.get(url, headers=headers)
@@ -425,8 +425,9 @@ class SfcOnos:
 
         Dicdata = {'flow_classifier': Dicdata}
         data = json.dumps(Dicdata, indent=4)
-        url = 'http://' + self.neutron_hostname + ':9696/' + self.osver + \
-              '/sfc/flow_classifiers'
+        url = ("http://%s:9696/%s/"
+               "sfc/flow_classifiers" % (self.neutron_hostname,
+                                         self.osver))
         headers = {"Accept": "application/json",
                    "X-Auth-Token": self.token_id}
         response = requests.post(url, headers=headers,  data=data)
@@ -455,8 +456,8 @@ class SfcOnos:
 
         Dicdata = {'port_chain': Dicdata}
         data = json.dumps(Dicdata, indent=4)
-        url = 'http://' + self.neutron_hostname + ':9696/' + self.osver + \
-              '/sfc/port_chains'
+        url = 'http://%s:9696/%s/sfc/port_chains' % (self.neutron_hostname,
+                                                     self.osver)
         headers = {"Accept": "application/json",
                    "Content-Type": "application/json",
                    "X-Auth-Token": self.token_id}
@@ -499,8 +500,8 @@ class SfcOnos:
 
         Dicdata = {'router': Dicdata}
         data = json.dumps(Dicdata, indent=4)
-        url = 'http://' + self.neutron_hostname + ':9696/' + \
-            self.osver + '/routers.json'
+        url = 'http://%s:9696/%s/routers.json' % (self.neutron_hostname,
+                                                  self.osver)
         headers = {"Accept": "application/json",
                    "X-Auth-Token": self.token_id}
         response = requests.post(url, headers=headers,  data=data)
@@ -517,10 +518,10 @@ class SfcOnos:
 
     def attachInterface(self):
         """Attachment of instance ports to the Router."""
-        url = 'http://' + self.neutron_hostname + ':9696/' + self.osver + \
-              '/networks?name=admin_floating_net'
-        headers = {"Accept": "application/json",
-                   "X-Auth-Token": self.token_id}
+        url = ("http://%s:9696/%s/networks"
+               "?name=admin_floating_net" % (self.neutron_hostname,
+                                             self.osver))
+        headers = {"Accept": "application/json", "X-Auth-Token": self.token_id}
         response = requests.get(url, headers=headers)
         if (response.status_code == OK):
             self.logger.debug(response.status_code)
@@ -540,8 +541,10 @@ class SfcOnos:
             Dicdata['subnet_id'] = self.subnetId
 
         data = json.dumps(Dicdata, indent=4)
-        url = 'http://' + self.neutron_hostname + ':9696/' + self.osver + \
-              '/routers/' + self.router_id + '/add_router_interface'
+        url = ("http://%s:9696/%s/routers"
+               "/%s/add_router_interface" % (self.neutron_hostname,
+                                             self.osver,
+                                             self.router_id))
         headers = {"Accept": "application/json",
                    "X-Auth-Token": self.token_id}
         response = requests.put(url, headers=headers,  data=data)
@@ -561,8 +564,9 @@ class SfcOnos:
         Dicdata1 = {'external_gateway_info': Dicdata1}
         Dicdata1 = {'router': Dicdata1}
         data = json.dumps(Dicdata1, indent=4)
-        url = 'http://' + self.neutron_hostname + ':9696/' + self.osver + \
-              '/routers/' + self.router_id
+        url = 'http://%s:9696/%s/routers/%s' % (self.neutron_hostname,
+                                                self.osver,
+                                                self.router_id)
         headers = {"Accept": "application/json",
                    "X-Auth-Token": self.token_id}
         response = requests.put(url, headers=headers,  data=data)
@@ -581,7 +585,8 @@ class SfcOnos:
             Dicdata['pool'] = "admin_floating_net"
 
             data = json.dumps(Dicdata, indent=4)
-            url = 'http://' + self.nova_hostname + ':8774/v2.1/os-floating-ips'
+            url = ("http://%s:8774/v2.1/"
+                   "os-floating-ips" % (self.nova_hostname))
             headers = {"Accept": "application/json",
                        "X-Auth-Token": self.token_id}
             response = requests.post(url, headers=headers,  data=data)
@@ -602,8 +607,10 @@ class SfcOnos:
 
             Dicdata1 = {'addFloatingIp': Dicdata1}
             data = json.dumps(Dicdata1, indent=4)
-            url = 'http://' + self.nova_hostname + ':8774/v2.1/servers/' + \
-                  self.vm[ip_num] + '/action'
+            url = ("http://%s:8774/v2.1/"
+                   "servers/%s/action" % (self.nova_hostname,
+                                          self.vm[ip_num]))
+
             headers = {"Accept": "application/json",
                        "X-Auth-Token": self.token_id}
             response = requests.post(url, headers=headers,  data=data)
@@ -710,8 +717,8 @@ class SfcOnos:
 
     def deletePortChain(self):
         """Deletion of PortChain."""
-        url = 'http://' + self.neutron_hostname + ':9696/' + self.osver + \
-              '/sfc/port_chains/' + self.PC_id
+        url = ('http://' + self.neutron_hostname + ':9696/' +
+               self.osver + '/sfc/port_chains/' + self.PC_id)
         headers = {"Accept": "application/json", "Content-Type":
                    "application/json", "X-Auth-Token": self.token_id}
         response = requests.delete(url, headers=headers)
@@ -724,8 +731,10 @@ class SfcOnos:
 
     def deleteFlowClassifier(self):
         """Deletion of Flow Classifier."""
-        url = 'http://' + self.neutron_hostname + ':9696/' + self.osver + \
-              '/sfc/flow_classifiers/' + self.flow_class_if
+        url = ("http://%s:9696/%s/sfc/"
+               "flow_classifiers/%s" % (self.neutron_hostname,
+                                        self.osver,
+                                        self.flow_class_if))
         headers = {"Accept": "application/json",
                    "X-Auth-Token": self.token_id}
         response = requests.delete(url, headers=headers)
@@ -739,8 +748,10 @@ class SfcOnos:
     def deletePortGroup(self):
         """Deletion of PortGroup."""
         for p in range(0, 1):
-            url = 'http://' + self.neutron_hostname + ':9696/' + self.osver + \
-                  '/sfc/port_pair_groups/' + self.port_grp_id[p]
+            url = ("http://%s:9696/%s/sfc/"
+                   "port_pair_groups/%s" % (self.neutron_hostname,
+                                            self.osver,
+                                            self.port_grp_id[p]))
             headers = {"Accept": "application/json", "X-Auth-Token":
                        self.token_id}
             response = requests.delete(url, headers=headers)
@@ -754,8 +765,10 @@ class SfcOnos:
     def deletePortPair(self):
         """Deletion of Portpair."""
         for p in range(1,  2):
-            url = 'http://' + self.neutron_hostname + ':9696/' + self.osver + \
-                  '/sfc/port_pairs/' + self.port_pair_id[0]
+            url = ("http://%s:9696/%s/sfc/"
+                   "port_pairs/%s" % (self.neutron_hostname,
+                                      self.osver,
+                                      self.port_pair_id[0]))
             headers = {"Accept": "application/json",
                        "X-Auth-Token": self.token_id}
             response = requests.delete(url, headers=headers)
@@ -770,8 +783,9 @@ class SfcOnos:
         """Cleanup."""
         self.logger.info("Deleting VMs")
         for y in range(0, 3):
-            url = 'http://' + self.nova_hostname + \
-                ':8774/v2.1/servers/' + self.vm[y]
+            url = ("http://%s:8774/v2.1/"
+                   "/servers/%s" % (self.nova_hostname,
+                                    self.vm[y]))
             headers = {"Accept": "application/json",
                        "X-Auth-Token": self.token_id}
             response = requests.delete(url, headers=headers)
@@ -784,8 +798,8 @@ class SfcOnos:
                 return(response.status_code)
         self.logger.info("Deleting Ports")
         for x in range(self.i, self.numTerms):
-            url = 'http://' + self.neutron_hostname + ':9696/' + self.osver + \
-                  '/ports/' + self.port_num[x]
+            url = ('http://' + self.neutron_hostname + ':9696/' +
+                   self.osver + '/ports/' + self.port_num[x])
             headers = {"Accept": "application/json", "X-Auth-Token":
                        self.token_id}
             response = requests.delete(url, headers=headers)
@@ -802,8 +816,10 @@ class SfcOnos:
         Dicdata['external_gateway_info'] = {}
         Dicdata = {'router': Dicdata}
         data = json.dumps(Dicdata, indent=4)
-        url = 'http://' + self.neutron_hostname + ':9696/' + self.osver + \
-              '/routers/' + self.router_id
+        url = ("http://%s:9696/%s/"
+               "/routers/%s" % (self.neutron_hostname,
+                                self.osver,
+                                self.router_id))
         headers = {"Accept": "application/json",
                    "X-Auth-Token": self.token_id}
         response = requests.put(url, headers=headers,  data=data)
@@ -814,15 +830,18 @@ class SfcOnos:
             if self.subnetId != '':
                 Dicdata1['subnet_id'] = self.subnetId
             data = json.dumps(Dicdata1, indent=4)
-            url = 'http://' + self.neutron_hostname + ':9696/' + self.osver + \
-                  '/routers/' + self.router_id + \
-                  '/remove_router_interface.json'
+            url = ("http://%s:9696/%s/routers/%s"
+                   "/remove_router_interface.json" % (self.neutron_hostname,
+                                                      self.osver,
+                                                      self.router_id))
             headers = {"Accept": "application/json",
                        "X-Auth-Token": self.token_id}
             response = requests.put(url, headers=headers,  data=data)
             if (response.status_code == OK):
-                url = ('http://' + self.neutron_hostname + ':9696/' +
-                       self.osver + '/routers/' + self.router_id)
+                url = ("http://%s:9696/%s/"
+                       "routers/%s" % (self.neutron_hostname,
+                                       self.osver,
+                                       self.router_id))
                 headers = {"Accept": "application/json",  "X-Auth-Token":
                            self.token_id}
                 response = requests.delete(url, headers=headers)
@@ -837,8 +856,10 @@ class SfcOnos:
             return(response.status_code)
 
         self.logger.info("Deleting Network")
-        url = 'http://' + self.neutron_hostname + ':9696/' + self.osver + \
-              '/networks/' + self.net_id
+        url = "http://%s:9696/%s/networks/%s" % (self.neutron_hostname,
+                                                 self.osver,
+                                                 self.net_id)
+
         headers = {"Accept": "application/json",
                    "X-Auth-Token": self.token_id}
         response = requests.delete(url, headers=headers)
@@ -850,8 +871,11 @@ class SfcOnos:
 
         self.logger.info("Deleting Floating ip")
         for ip_num in range(0, 2):
-            url = 'http://' + self.neutron_hostname + ':9696/' + self.osver + \
-                  '/floatingips/' + self.vm_public_id[ip_num]
+            url = ("http://%s:9696/%s/floatingips"
+                   "/%s" % (self.neutron_hostname,
+                            self.osver,
+                            self.vm_public_id[ip_num]))
+
             headers = {"Accept": "application/json", "X-Auth-Token":
                        self.token_id}
             response = requests.delete(url, headers=headers)
diff --git a/functest/opnfv_tests/sdn/onos/teston/adapters/environment.py b/functest/opnfv_tests/sdn/onos/teston/adapters/environment.py
index 06d25b9e..046a821d 100644
--- a/functest/opnfv_tests/sdn/onos/teston/adapters/environment.py
+++ b/functest/opnfv_tests/sdn/onos/teston/adapters/environment.py
@@ -196,7 +196,7 @@ class Environment(Connection):
 
     def ChangeTestCasePara(self, testcase, user, password):
         """
-        When running test script, there's something need \
+        When running test script, there's something need
         to change in every test folder's *.param & *.topo files
         user: onos&compute node user
         password: onos&compute node password
diff --git a/functest/opnfv_tests/sdn/onos/teston/adapters/foundation.py b/functest/opnfv_tests/sdn/onos/teston/adapters/foundation.py
index 52462b60..bf2c4302 100644
--- a/functest/opnfv_tests/sdn/onos/teston/adapters/foundation.py
+++ b/functest/opnfv_tests/sdn/onos/teston/adapters/foundation.py
@@ -26,8 +26,7 @@ class Foundation:
     def __init__(self):
 
         # currentpath = os.getcwd()
-        currentpath = \
-            ft_constants.FUNCTEST_TEST_DIR + '/sdn/onos/teston/ci'
+        currentpath = '%s/sdn/onos/teston/ci' % ft_constants.FUNCTEST_TEST_DIR
         self.cipath = currentpath
         self.logdir = os.path.join(currentpath, 'log')
         self.workhome = currentpath[0: currentpath.rfind('opnfv_tests') - 1]
diff --git a/functest/opnfv_tests/vnf/ims/orchestrator.py b/functest/opnfv_tests/vnf/ims/orchestrator.py
index 5f84df00..f3838f87 100644
--- a/functest/opnfv_tests/vnf/ims/orchestrator.py
+++ b/functest/opnfv_tests/vnf/ims/orchestrator.py
@@ -138,8 +138,8 @@ class Orchestrator:
                                              bp_name, dep_name):
         self.logger.info("Downloading the {0} blueprint".format(
             blueprint['file_name']))
-        destination_folder = self.testcase_dir + \
-            blueprint['destination_folder']
+        destination_folder = os.path.join(self.testcase_dir,
+                                          blueprint['destination_folder'])
         download_result = self._download_blueprints(blueprint['url'],
                                                     blueprint['branch'],
                                                     destination_folder)