diff --git a/src/device/service/OpenConfigServicer.py b/src/device/service/OpenConfigServicer.py
index 2a7e94a99262d8ae4add2896aa2788efc254dee2..bee2d4d5ccf6a5757b854f2d8b2275c4da64758f 100644
--- a/src/device/service/OpenConfigServicer.py
+++ b/src/device/service/OpenConfigServicer.py
@@ -16,7 +16,8 @@ import grpc, logging, json
 from common.method_wrappers.Decorator import MetricsPool, safe_and_metered_rpc_method
 from common.method_wrappers.ServiceExceptions import NotFoundException
 from common.proto.context_pb2 import (
-    Device, DeviceId, DeviceOperationalStatusEnum, Empty, OpticalConfig, OpticalConfig,OpticalConfigList,EndPoint
+    Device, DeviceId, DeviceOperationalStatusEnum, Empty, OpticalConfig,
+    OpticalConfig, OpticalConfigList
 )
 from common.proto.device_pb2_grpc import DeviceServiceServicer
 from common.tools.context_queries.Device import get_device
@@ -25,7 +26,7 @@ from context.client.ContextClient import ContextClient
 from .driver_api._Driver import _Driver
 from .driver_api.DriverInstanceCache import DriverInstanceCache, get_driver
 from .monitoring.MonitoringLoops import MonitoringLoops
-from .Tools import extract_resources , get_endpoint_matching
+from .Tools import extract_resources
 from .Tools import check_no_endpoints
 
 LOGGER = logging.getLogger(__name__)
@@ -76,104 +77,84 @@ class OpenConfigServicer(DeviceServiceServicer):
     @safe_and_metered_rpc_method(METRICS_POOL, LOGGER)
     def ConfigureOpticalDevice (self, request : OpticalConfig, context : grpc.ServicerContext) -> Empty:
         device_uuid = request.device_id.device_uuid.uuid
-        resources:list[dict]=[]
-        is_all_good=True
-        config =json.loads(request.config)
-        results=None
+        resources : list[dict] = []
+        is_all_good = True
+        config = json.loads(request.config)
+        results = None
 
         try:
             context_client = ContextClient()
             device = get_device(
                 context_client, device_uuid, rw_copy=True, include_endpoints=True, include_components=False,
                 include_config_rules=False)
-           
             if device is None:
                 raise NotFoundException('Device', device_uuid, extra_details='loading in ConfigureDevice')
-      
-            resources,conditions=extract_resources(config=config,device=device)
-   
+            resources, conditions = extract_resources(config=config, device=device)
+
             driver : _Driver = get_driver(self.driver_instance_cache, device)
             results = driver.SetConfig(resources=resources,conditions=conditions)
             for result in results:
                 if not result :
-                    is_all_good=False
-         
-      
+                    is_all_good = False
+
             if is_all_good:
                 #driver.GetConfig(resource_keys=[])   
                 config = json.loads(request.config)
-                handled_flow=next((i for i in resources if i['resource_key']=='handled_flow'),None)
-                flow_handled=[ ]
-             
-         
-                if handled_flow is not None and len(handled_flow)>0:
-                    config['flow_handled']=handled_flow['value']
-                    
+                handled_flow = next((i for i in resources if i['resource_key'] == 'handled_flow'), None)
+                if handled_flow is not None and len(handled_flow) > 0:
+                    config['flow_handled'] = handled_flow['value']
                     request.config=json.dumps(config) 
-                    
                 context_client.UpdateOpticalConfig(request) 
                 context_client.close()    
         except Exception as e:
-                LOGGER.info("error in configuring %s",e)    
+            LOGGER.info("error in configuring %s",e)    
         return Empty()
-    
-    
+
     @safe_and_metered_rpc_method(METRICS_POOL, LOGGER)
     def GetDeviceConfiguration (self, request : OpticalConfigList, context : grpc.ServicerContext) -> Empty:
         context_client = ContextClient()
-      
-        for configs in request.opticalconfigs:
 
+        for configs in request.opticalconfigs:
             device_uuid = configs.device_id.device_uuid.uuid
-
             try:
-                
                 device = get_device(
                     context_client, device_uuid, rw_copy=True, include_endpoints=True, include_components=False,
                     include_config_rules=False)
-         
                 if device is None:
                     raise NotFoundException('Device', device_uuid, extra_details='loading in ConfigureDevice')
-               
                 driver : _Driver = get_driver(self.driver_instance_cache, device)
-           
                 results = driver.GetConfig(resource_keys=[]) 
                 for resource_data in results :
                     resource_key, resource_value = resource_data
-                           
                     if resource_key.startswith('/opticalconfigs/opticalconfig/'):
                         if 'opticalconfig' in resource_value:
-                                context_client.SetOpticalConfig(resource_value['opticalconfig'])
+                            context_client.SetOpticalConfig(resource_value['opticalconfig'])
 
                 #TODO: add a control with the NETCONF get
                 #driver.GetConfig(resource_keys=filter_fields)
             except Exception as e:
-                    LOGGER.info("error in configuring %s",e)                
+                LOGGER.info("error in configuring %s",e)                
         context_client.close()
         return Empty()
-        
-    
-    
-    
+
     @safe_and_metered_rpc_method(METRICS_POOL, LOGGER)
     def DisableOpticalDevice (self, request : OpticalConfig, context : grpc.ServicerContext) -> Empty:
-        
-        roadm_configuration=None
+        roadm_configuration = None
         device_uuid = request.device_id.device_uuid.uuid
-        resources:list[dict]=[]
-        is_all_good=True
-        config =json.loads(request.config)
+        resources : list[dict] = []
+        is_all_good = True
+        config = json.loads(request.config)
 
         try:
             context_client = ContextClient()
             device = get_device(
                 context_client, device_uuid, rw_copy=True, include_endpoints=True, include_components=False,
                 include_config_rules=False)
-          
+
             if device is None:
                 raise NotFoundException('Device', device_uuid, extra_details='loading in ConfigureDevice')
-    
-            resources,conditions=extract_resources(config=config,device=device)
+
+            resources, conditions = extract_resources(config=config, device=device)
 
             driver : _Driver = get_driver(self.driver_instance_cache, device)
             if  'edit_type' in conditions and conditions['edit_type'] == 'optical-band':
@@ -181,22 +162,17 @@ class OpenConfigServicer(DeviceServiceServicer):
                 for resource_data in roadm_configuration:
                     resource_key, resource_value = resource_data
                     if resource_key.startswith('/opticalconfigs/opticalconfig/'):
-                       roadm_configuration=resource_value["opticalconfig"]
+                        roadm_configuration=resource_value["opticalconfig"]
             results = driver.DeleteConfig(resources=resources,conditions=conditions,optical_device_configuration=roadm_configuration)
             for result in results:
                 if not result :
-                    is_all_good=False
+                    is_all_good = False
 
             if is_all_good:
                 config = json.loads(request.config)
-                flow_handled=[ ]
                 if "new_config" in config :
-                    
-                    
-                   context_client.DeleteOpticalChannel(request) 
-                   context_client.close()    
+                    context_client.DeleteOpticalChannel(request) 
+                    context_client.close()    
         except Exception as e:
-                LOGGER.info("error in Disable configuring %s",e)    
+            LOGGER.info("error in Disable configuring %s",e)    
         return Empty()
-    
-      
\ No newline at end of file
diff --git a/src/device/service/Tools.py b/src/device/service/Tools.py
index 367188650c72c1d2990231bd27dc45e9e162cc50..967a6a8c19ca4da763f29bfa164f50ad88d27363 100644
--- a/src/device/service/Tools.py
+++ b/src/device/service/Tools.py
@@ -17,7 +17,9 @@ from typing import Any, Dict, List, Optional, Tuple, Union
 from common.Constants import DEFAULT_CONTEXT_NAME, DEFAULT_TOPOLOGY_NAME
 from common.DeviceTypes import DeviceTypeEnum
 from common.method_wrappers.ServiceExceptions import InvalidArgumentException, NotFoundException
-from common.proto.context_pb2 import ConfigActionEnum, ConfigRule_ACL, Device, DeviceConfig, EndPoint, Link, Location,OpticalConfig
+from common.proto.context_pb2 import (
+    ConfigActionEnum, ConfigRule_ACL, Device, DeviceConfig, EndPoint, Link, Location, OpticalConfig
+)
 from common.proto.device_pb2 import MonitoringSettings
 from common.proto.kpi_sample_types_pb2 import KpiSampleType
 from common.tools.grpc.ConfigRules import update_config_rule_custom
@@ -26,7 +28,8 @@ from common.type_checkers.Checkers import chk_length, chk_type
 from .driver_api._Driver import _Driver, RESOURCE_ENDPOINTS
 from .monitoring.MonitoringLoops import MonitoringLoops
 from .ErrorMessages import (
-    ERROR_BAD_RESOURCE, ERROR_DELETE, ERROR_GET, ERROR_GET_INIT, ERROR_MISSING_KPI, ERROR_SAMPLETYPE, ERROR_SET,
+    ERROR_BAD_RESOURCE, ERROR_DELETE, ERROR_GET, ERROR_GET_INIT,
+    ERROR_MISSING_KPI, ERROR_SAMPLETYPE, ERROR_SET,
     ERROR_SUBSCRIBE, ERROR_UNSUBSCRIBE, ERROR_UNSUP_RESOURCE
 )
 
@@ -106,8 +109,8 @@ def get_device_controller_uuid(device : Device) -> Optional[str]:
 
 def populate_endpoints(
     device : Device, driver : _Driver, monitoring_loops : MonitoringLoops,
-    new_sub_devices : Dict[str, Device], new_sub_links : Dict[str, Link]
-    ,new_optical_configs:Dict[str,OpticalConfig]
+    new_sub_devices : Dict[str, Device], new_sub_links : Dict[str, Link],
+    new_optical_configs : Dict[str, OpticalConfig]
 ) -> List[str]:
     device_uuid = device.device_id.device_uuid.uuid
     device_name = device.name
@@ -116,7 +119,6 @@ def populate_endpoints(
     results_getconfig = driver.GetConfig(resources_to_get)
     LOGGER.debug('results_getconfig = {:s}'.format(str(results_getconfig)))
 
-
     # first quick pass to identify need of mgmt endpoints and links
     add_mgmt_port = False
     for resource_data in results_getconfig:
@@ -238,12 +240,10 @@ def populate_endpoints(
                 _sub_link_endpoint_id.topology_id.topology_uuid.uuid = DEFAULT_TOPOLOGY_NAME
                 _sub_link_endpoint_id.device_id.device_uuid.uuid = device_uuid
                 _sub_link_endpoint_id.endpoint_uuid.uuid = endpoint_uuid
-                
+
         # ----------Experimental --------------
         elif resource_key.startswith('/opticalconfigs/opticalconfig/'):
             new_optical_configs["new_optical_config"]=resource_value
-            
-                
         else:
             errors.append(ERROR_UNSUP_RESOURCE.format(device_uuid=device_uuid, resource_data=str(resource_data)))
             continue
@@ -277,8 +277,7 @@ def _raw_config_rules_to_grpc(
                 device_uuid=device_uuid, resource_key=str(resource_key), resource_value=str(resource_value),
                 error=str(resource_value)))
             continue
-  
-        
+
         if resource_value is None: continue
         resource_value = json.loads(resource_value) if isinstance(resource_value, str) else resource_value
         if isinstance(resource_value, ConfigRule_ACL): resource_value = grpc_message_to_json(resource_value)
@@ -288,7 +287,6 @@ def _raw_config_rules_to_grpc(
     return errors
 
 def populate_config_rules(device : Device, driver : _Driver) -> List[str]:
-    
     device_uuid = device.device_id.device_uuid.uuid
     results_getconfig = driver.GetConfig()
     return _raw_config_rules_to_grpc(
@@ -462,7 +460,6 @@ def update_endpoints(src_device : Device, dst_device : Device) -> None:
             if len(src_context_uuid) > 0: dst_topology_id.context_id.context_uuid.uuid = src_context_uuid
 
 def get_edit_target(device : Device, is_opticalband : bool) -> str:
-
     if is_opticalband: return 'optical-band'
     if device.device_type == DeviceTypeEnum.OPTICAL_ROADM._value_: return 'media-channel'
     return 'optical-channel'
@@ -478,20 +475,20 @@ def is_key_existed(key : str, keys_dic = dict, key_name_to_use = None) -> dict:
         dic['value'] = None
     return dic
 
-def extract_resources(config : dict, device : Device) -> list[list[dict],dict]:
+def extract_resources(config : dict, device : Device) -> list[list[dict], dict]:
     conditions = {}
-    resources:list[dict] = []
+    resources : list[dict] = []
     resources.append(is_key_existed('channel_namespace', config))
     resources.append(is_key_existed('add_transceiver', config))
     is_opticalband = config.get('is_opticalband', False)
     conditions['is_opticalband'] = is_opticalband
     conditions['edit_type'] = get_edit_target(device, is_opticalband)
-  
+
     if 'flow' in config:
         #for tuple_value in config['flow'][device.name]:
         source_vals = []
         dest_vals = []
-        handled_flow=[]
+        handled_flow = []
         for tuple_value in config['flow']:
             source_port = None 
             destination_port = None
@@ -504,10 +501,10 @@ def extract_resources(config : dict, device : Device) -> list[list[dict],dict]:
                 dst_endpoint_obj = get_endpoint_matching(device, destination_port_uuid)
                 destination_port = dst_endpoint_obj.name
             dest_vals.append(destination_port)
-            handled_flow.append((source_port,destination_port))
-        resources.append({'resource_key': 'source_port',      'value': source_vals})
-        resources.append({'resource_key': 'destination_port', 'value': dest_vals  })
-        resources.append({'resource_key':'handled_flow','value':handled_flow})
+            handled_flow.append((source_port, destination_port))
+        resources.append({'resource_key': 'source_port',      'value': source_vals })
+        resources.append({'resource_key': 'destination_port', 'value': dest_vals   })
+        resources.append({'resource_key': 'handled_flow',     'value': handled_flow})
     if 'new_config' in config:
         lower_frequency = None
         upper_frequency = None
@@ -520,21 +517,15 @@ def extract_resources(config : dict, device : Device) -> list[list[dict],dict]:
         resources.append(is_key_existed('ob_id',     keys_dic=config['new_config'], key_name_to_use='optical-band-parent'))
         #resources.append(is_key_existed('name',      keys_dic=config['new_config'], key_name_to_use='channel_name'))
         if not is_opticalband:
-    
             if 'frequency' in config['new_config'] and 'band' in config['new_config'] and conditions['edit_type'] == 'media-channel':
                 if config['new_config']['frequency'] is not None and config['new_config']['band'] is not None:
                     lower_frequency = int(int(config['new_config']['frequency']) - (int(config['new_config']['band'])/2)+1)
                     upper_frequency = int(int(config['new_config']['frequency']) + (int(config['new_config']['band'])/2))
-            
-           
                 resources.append(is_key_existed('flow_id', keys_dic=config['new_config'], key_name_to_use='index'))
                 #resources.append({'resource_key':'index','value':config['new_config']['flow_id'] if 'flow_id' in config['new_config'] else None})
         else:
-            
             lower_frequency = config['new_config']['low-freq'] if 'low-freq' in config['new_config'] else None
             upper_frequency = config['new_config']['up-freq' ] if 'up-freq'  in config['new_config'] else None
-   
-            
             resources.append(is_key_existed('ob_id', keys_dic=config['new_config'], key_name_to_use='index'))
             #resources.append({'resource_key':'index','value':config['new_config']['ob_id'] if 'ob_id' in config['new_config'] else None})
         resources.append({'resource_key': 'lower-frequency', 'value': lower_frequency})