diff --git a/data/pldm_variables.py b/data/pldm_variables.py
index c5407d6..61b0ea1 100755
--- a/data/pldm_variables.py
+++ b/data/pldm_variables.py
@@ -4,38 +4,66 @@
 Contains PLDM-related constants.
 """
 
-PLDM_SUPPORTED_TYPES = ['base', 'platform', 'bios', 'fru', 'oem-ibm']
+PLDM_SUPPORTED_TYPES = ["base", "platform", "bios", "fru", "oem-ibm"]
 
 # PLDM types.
-PLDM_TYPE_BASE = {'VALUE': '00', 'STRING': 'base'}
-PLDM_TYPE_PLATFORM = {'VALUE': '02', 'STRING': 'platform'}
-PLDM_TYPE_BIOS = {'VALUE': '03', 'STRING': 'bios'}
-PLDM_TYPE_FRU = {'VALUE': '04', 'STRING': 'fru'}
-PLDM_TYPE_OEM = {'VALUE': '63', 'STRING': 'oem-ibm'}
-PLDM_SUPPORTED_TYPES = ['0(base)', '2(platform)', '3(bios)', '4(fru)', '63(oem-ibm)']
+PLDM_TYPE_BASE = {"VALUE": "00", "STRING": "base"}
+PLDM_TYPE_PLATFORM = {"VALUE": "02", "STRING": "platform"}
+PLDM_TYPE_BIOS = {"VALUE": "03", "STRING": "bios"}
+PLDM_TYPE_FRU = {"VALUE": "04", "STRING": "fru"}
+PLDM_TYPE_OEM = {"VALUE": "63", "STRING": "oem-ibm"}
+PLDM_SUPPORTED_TYPES = [
+    "0(base)",
+    "2(platform)",
+    "3(bios)",
+    "4(fru)",
+    "63(oem-ibm)",
+]
 
-VERSION_BASE = {'VALUE': ['f1', 'f0', 'f0', '00'], 'STRING': '1.0.0'}
-VERSION_PLATFORM = {'VALUE': ['f1', 'f2', 'f0', '00'], 'STRING': '1.2.0'}
-VERSION_BIOS = {'VALUE': ['f1', 'f1', 'f1', '00'], 'STRING': '1.0.0'}
-VERSION_FRU = {'VALUE': ['f1', 'f0', 'f0', '00'], 'STRING': '1.0.0'}
-VERSION_OEM = {'VALUE': ['f1', 'f0', 'f0', '00'], 'STRING': '1.0.0'}
+VERSION_BASE = {"VALUE": ["f1", "f0", "f0", "00"], "STRING": "1.0.0"}
+VERSION_PLATFORM = {"VALUE": ["f1", "f2", "f0", "00"], "STRING": "1.2.0"}
+VERSION_BIOS = {"VALUE": ["f1", "f1", "f1", "00"], "STRING": "1.0.0"}
+VERSION_FRU = {"VALUE": ["f1", "f0", "f0", "00"], "STRING": "1.0.0"}
+VERSION_OEM = {"VALUE": ["f1", "f0", "f0", "00"], "STRING": "1.0.0"}
 
 
-PLDM_BASE_CMDS = ['2(GetTID)', '3(GetPLDMVersion)', '4(GetPLDMTypes)', '5(GetPLDMCommands)']
-PLDM_PLATFORM_CMDS = ['57(SetStateEffecterStates)', '81(GetPDR)']
-PLDM_BIOS_CMDS = ['1(GetBIOSTable)', '7(SetBIOSAttributeCurrentValue)',
-                  '8(GetBIOSAttributeCurrentValueByHandle)', '12(GetDateTime)',
-                  '13(SetDateTime)']
-PLDM_FRU_CMDS = ['1(GetFRURecordTableMetadata)', '2(GetFRURecordTable)', '4(GetFRURecordByOption)']
-PLDM_OEM_CMDS = ['1(GetFileTable)', '4(ReadFile)', '5(WriteFile)', '6(ReadFileInToMemory)',
-                 '7(WriteFileFromMemory)', '8(ReadFileByTypeIntoMemory)',
-                 '9(WriteFileByTypeFromMemory)', '10(NewFileAvailable)',
-                 '11(ReadFileByType)', '12(WriteFileByType)', '13(FileAck)',
-                 '240(GetAlertStatus)']
+PLDM_BASE_CMDS = [
+    "2(GetTID)",
+    "3(GetPLDMVersion)",
+    "4(GetPLDMTypes)",
+    "5(GetPLDMCommands)",
+]
+PLDM_PLATFORM_CMDS = ["57(SetStateEffecterStates)", "81(GetPDR)"]
+PLDM_BIOS_CMDS = [
+    "1(GetBIOSTable)",
+    "7(SetBIOSAttributeCurrentValue)",
+    "8(GetBIOSAttributeCurrentValueByHandle)",
+    "12(GetDateTime)",
+    "13(SetDateTime)",
+]
+PLDM_FRU_CMDS = [
+    "1(GetFRURecordTableMetadata)",
+    "2(GetFRURecordTable)",
+    "4(GetFRURecordByOption)",
+]
+PLDM_OEM_CMDS = [
+    "1(GetFileTable)",
+    "4(ReadFile)",
+    "5(WriteFile)",
+    "6(ReadFileInToMemory)",
+    "7(WriteFileFromMemory)",
+    "8(ReadFileByTypeIntoMemory)",
+    "9(WriteFileByTypeFromMemory)",
+    "10(NewFileAvailable)",
+    "11(ReadFileByType)",
+    "12(WriteFileByType)",
+    "13(FileAck)",
+    "240(GetAlertStatus)",
+]
 
 # PLDM command format.
 
-'''
+"""
 e.g. : GetPLDMVersion usage
 
 pldmtool base GetPLDMVersion -t <pldm_type>
@@ -44,46 +72,49 @@
 
 base->0,platform->2,bios->3,fru->4
 
-'''
-CMD_GETPLDMVERSION = 'base GetPLDMVersion -t %s'
+"""
+CMD_GETPLDMVERSION = "base GetPLDMVersion -t %s"
 
-'''
+"""
 e.g. : PLDM raw command usage
 
 pldmtool raw -d 0x80 0x00 0x03 0x00 0x00 0x00 0x00 0x01 0x00
 
 pldm raw -d 0x<header> 0x<pldm_type> 0x<pldm_cmd_type> 0x<payload_data>
-'''
+"""
 
-CMD_PLDMTOOL_RAW = 'raw -d 0x80' + '0x%s' + ' ' + '0x%s'
+CMD_PLDMTOOL_RAW = "raw -d 0x80" + "0x%s" + " " + "0x%s"
 
 
 # PLDM command payload data.
 
-PAYLOAD_GetPLDMVersion = \
-    ' 0x00 0x00 0x00 0x00 0x%s 0x%s'    # %(TransferOperationFlag, PLDMType)
+PAYLOAD_GetPLDMVersion = (  # %(TransferOperationFlag, PLDMType)
+    " 0x00 0x00 0x00 0x00 0x%s 0x%s"
+)
 
 
-'''
+"""
 e.g. : SetDateTime usage
 
 pldmtool bios SetDateTime -d <YYYYMMDDHHMMSS>
 
-'''
-CMD_SETDATETIME = 'bios SetDateTime -d %s'
+"""
+CMD_SETDATETIME = "bios SetDateTime -d %s"
 
 
-CMD_GETPDR = 'platform GetPDR -d %s'
+CMD_GETPDR = "platform GetPDR -d %s"
 
-'''
+"""
 e.g. : SetStateEffecterStates usage
 
 pldmtool platform GetPDR -i <effter_handle> -c <count> -d <effecterID, effecterState>
 
 pldmtool platform SetStateEffecterStates -i 1 -c 1 -d 1 1
-'''
+"""
 
-CMD_SETSTATEEFFECTERSTATES = 'platform SetStateEffecterStates -i %s -c %s -d %s'
+CMD_SETSTATEEFFECTERSTATES = (
+    "platform SetStateEffecterStates -i %s -c %s -d %s"
+)
 
 # GetPDR parsed response message for record handle.
 # Dictionary value array holds the expected output for record handle 1, 2.
@@ -93,98 +124,137 @@
 #      Only record handle 0, 1, 2 are supported as of now.
 
 RESPONSE_DICT_GETPDR_SETSTATEEFFECTER = {
-    'PDRHeaderVersion': [1],
-    'PDRType': ['State Effecter PDR'],
-    'recordChangeNumber': [0],
-    'effecterID': [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
-    'entityType': ['Virtual Machine Manager', 'System chassis (main enclosure)',
-                   'System Firmware', 'Processor Module', '32801(OEM)',
-                   'Management Controller', '24577(OEM)'],
-    'entityInstanceNumber': [0, 1, 2, 3, 4],
-    'containerID': [0, 1],
-    'effecterSemanticID': [0],
-    'effecterInit': ['noInit'],
-    'effecterDescriptionPDR': [False],
-    'compositeEffecterCount': [1]}
+    "PDRHeaderVersion": [1],
+    "PDRType": ["State Effecter PDR"],
+    "recordChangeNumber": [0],
+    "effecterID": [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
+    "entityType": [
+        "Virtual Machine Manager",
+        "System chassis (main enclosure)",
+        "System Firmware",
+        "Processor Module",
+        "32801(OEM)",
+        "Management Controller",
+        "24577(OEM)",
+    ],
+    "entityInstanceNumber": [0, 1, 2, 3, 4],
+    "containerID": [0, 1],
+    "effecterSemanticID": [0],
+    "effecterInit": ["noInit"],
+    "effecterDescriptionPDR": [False],
+    "compositeEffecterCount": [1],
+}
 
 RESPONSE_DICT_GETPDR_FRURECORDSETIDENTIFIER = {
-    'PDRHeaderVersion': [1],
-    'PDRType': ['FRU Record Set PDR'],
-    'recordChangeNumber': [0],
-    'dataLength': [10],
-    'entityType': ['System Board', 'Chassis front panel board (control panel)',
-                   'Management Controller', 'OEM', 'Power converter',
-                   'System (logical)', 'System chassis (main enclosure)',
-                   'Chassis front panel board (control panel)',
-                   'Processor Module', 'Memory Module', 'Power Supply',
-                   '24576(OEM)', '60(OEM)', 'Processor', '142(OEM)'],
-    'containerID': [0, 1, 2, 3]}
+    "PDRHeaderVersion": [1],
+    "PDRType": ["FRU Record Set PDR"],
+    "recordChangeNumber": [0],
+    "dataLength": [10],
+    "entityType": [
+        "System Board",
+        "Chassis front panel board (control panel)",
+        "Management Controller",
+        "OEM",
+        "Power converter",
+        "System (logical)",
+        "System chassis (main enclosure)",
+        "Chassis front panel board (control panel)",
+        "Processor Module",
+        "Memory Module",
+        "Power Supply",
+        "24576(OEM)",
+        "60(OEM)",
+        "Processor",
+        "142(OEM)",
+    ],
+    "containerID": [0, 1, 2, 3],
+}
 
 RESPONSE_DICT_GETPDR_PDRENTITYASSOCIATION = {
-    'PDRHeaderVersion': [1],
-    'PDRType': ['Entity Association PDR'],
-    'recordChangeNumber': [0],
-    'containerID': [1, 2, 3],
-    'associationtype': ['Physical'],
-    'containerentityType': ['System Board', 'System (logical)',
-                            'System chassis (main enclosure)']}
+    "PDRHeaderVersion": [1],
+    "PDRType": ["Entity Association PDR"],
+    "recordChangeNumber": [0],
+    "containerID": [1, 2, 3],
+    "associationtype": ["Physical"],
+    "containerentityType": [
+        "System Board",
+        "System (logical)",
+        "System chassis (main enclosure)",
+    ],
+}
 
 RESPONSE_DICT_GETPDR_STATESENSORPDR = {
-    'entityType': ['Communication Channel', 'Connector', 'Processor Module',
-                   '32774(OEM)', '57346(OEM)', '57347(OEM)', '32801(OEM)',
-                   '91(OEM)', '5(OEM)', '24577(OEM)'],
-    'sensorInit': ['noInit'],
-    'sensorAuxiliaryNamesPDR': [False]}
+    "entityType": [
+        "Communication Channel",
+        "Connector",
+        "Processor Module",
+        "32774(OEM)",
+        "57346(OEM)",
+        "57347(OEM)",
+        "32801(OEM)",
+        "91(OEM)",
+        "5(OEM)",
+        "24577(OEM)",
+    ],
+    "sensorInit": ["noInit"],
+    "sensorAuxiliaryNamesPDR": [False],
+}
 
 RESPONSE_DICT_GETPDR_TERMINUSLOCATORPDR = {
-    'PDRHeaderVersion': [1],
-    'PDRType': ['Terminus Locator PDR'],
-    'recordChangeNumber': [0],
-    'validity': ['valid'],
-    'TID': [0, 1, 208],
-    'containerID': [0, 1],
-    'terminusLocatorType': ['MCTP_EID'],
-    'terminusLocatorValueSize': [1]}
+    "PDRHeaderVersion": [1],
+    "PDRType": ["Terminus Locator PDR"],
+    "recordChangeNumber": [0],
+    "validity": ["valid"],
+    "TID": [0, 1, 208],
+    "containerID": [0, 1],
+    "terminusLocatorType": ["MCTP_EID"],
+    "terminusLocatorValueSize": [1],
+}
 
 RESPONSE_DICT_GETPDR_NUMERICEFFECTERPDR = {
-    'PDRHeaderVersion': [1],
-    'PDRType': ['Numeric Effecter PDR'],
-    'recordChangeNumber': [0],
-    'entityInstanceNumber': [0, 1],
-    'containerID': [0],
-    'effecterSemanticID': [0],
-    'effecterInit': [0],
-    'effecterAuxiliaryNames': [False],
-    'baseUnit': [0, 72, 21],
-    'unitModifier': [0],
-    'baseOEMUnitHandle': [0],
-    'auxUnit': [0],
-    'auxUnitModifier': [0],
-    'auxrateUnit': [0],
-    'auxOEMUnitHandle': [0],
-    'resolution': [1, 0],
-    'offset': [0],
-    'accuracy': [0],
-    'plusTolerance': [0],
-    'minusTolerance': [0],
-    'stateTransitionInterval': [0],
-    'TransitionInterval': [0],
-    'minSettable': [0],
-    'rangeFieldSupport': [0],
-    'nominalValue': [0],
-    'normalMax': [0],
-    'normalMin': [0],
-    'ratedMax': [0],
-    'ratedMin': [0]}
+    "PDRHeaderVersion": [1],
+    "PDRType": ["Numeric Effecter PDR"],
+    "recordChangeNumber": [0],
+    "entityInstanceNumber": [0, 1],
+    "containerID": [0],
+    "effecterSemanticID": [0],
+    "effecterInit": [0],
+    "effecterAuxiliaryNames": [False],
+    "baseUnit": [0, 72, 21],
+    "unitModifier": [0],
+    "baseOEMUnitHandle": [0],
+    "auxUnit": [0],
+    "auxUnitModifier": [0],
+    "auxrateUnit": [0],
+    "auxOEMUnitHandle": [0],
+    "resolution": [1, 0],
+    "offset": [0],
+    "accuracy": [0],
+    "plusTolerance": [0],
+    "minusTolerance": [0],
+    "stateTransitionInterval": [0],
+    "TransitionInterval": [0],
+    "minSettable": [0],
+    "rangeFieldSupport": [0],
+    "nominalValue": [0],
+    "normalMax": [0],
+    "normalMin": [0],
+    "ratedMax": [0],
+    "ratedMin": [0],
+}
 
 PLDM_PDR_TYPES = {
-    'PLDM_STATE_EFFECTER_PDR': 'State Effecter PDR',
-    'PLDM_PDR_FRU_RECORD_SET': 'FRU Record Set PDR',
-    'PLDM_PDR_ENTITY_ASSOCIATION': 'Entity Association PDR',
-    'PLDM_STATE_SENSOR_PDR': 'State Sensor PDR',
-    'PLDM_NUMERIC_EFFECTER_PDR': 'Numeric Effecter PDR',
-    'PLDM_TERMINUS_LOCATOR_PDR': 'Terminus Locator PDR',
-    'PLDM_COMPACT_NUMERIC_SENSOR_PDR': '21'}
+    "PLDM_STATE_EFFECTER_PDR": "State Effecter PDR",
+    "PLDM_PDR_FRU_RECORD_SET": "FRU Record Set PDR",
+    "PLDM_PDR_ENTITY_ASSOCIATION": "Entity Association PDR",
+    "PLDM_STATE_SENSOR_PDR": "State Sensor PDR",
+    "PLDM_NUMERIC_EFFECTER_PDR": "Numeric Effecter PDR",
+    "PLDM_TERMINUS_LOCATOR_PDR": "Terminus Locator PDR",
+    "PLDM_COMPACT_NUMERIC_SENSOR_PDR": "21",
+}
 
 RESPONSE_LIST_GETBIOSTABLE_ATTRVALTABLE = [
-    'BIOSString', 'BIOSInteger', 'BIOSEnumeration']
+    "BIOSString",
+    "BIOSInteger",
+    "BIOSEnumeration",
+]