diff --git a/gui/data/gui_variables.py b/gui/data/gui_variables.py
index 0fe686a..663f9b0 100644
--- a/gui/data/gui_variables.py
+++ b/gui/data/gui_variables.py
@@ -5,8 +5,7 @@
 """
 
 
-class gui_variables():
-
+class gui_variables:
     # Login page
     xpath_textbox_hostname = "//input[@id='host']"
     xpath_textbox_username = "//*[@data-test-id='login-input-username']"
@@ -20,8 +19,12 @@
     # GUI header
     xpath_root_button_menu = "//*[@data-test-id='appHeader-container-user']"
     xpath_profile_settings = "//*[@data-test-id='appHeader-link-profile']"
-    xpath_server_health_header = "//*[@data-test-id='appHeader-container-health']"
-    xpath_server_power_header = "//*[@data-test-id='appHeader-container-power']"
+    xpath_server_health_header = (
+        "//*[@data-test-id='appHeader-container-health']"
+    )
+    xpath_server_power_header = (
+        "//*[@data-test-id='appHeader-container-power']"
+    )
     xpath_refresh_button = "//*[@data-test-id='appHeader-button-refresh']"
 
     # Logs menu
@@ -30,21 +33,33 @@
     xpath_dumps_header = "//h1[text()='Dumps']"
     xpath_event_logs_sub_menu = "//*[@data-test-id='nav-item-event-logs']"
     xpath_event_logs_heading = "//h1[contains(text(), 'Event logs')]"
-    xpath_progress_logs_sub_menu = "//*[@data-test-id='nav-item-post-code-logs']"
+    xpath_progress_logs_sub_menu = (
+        "//*[@data-test-id='nav-item-post-code-logs']"
+    )
 
     # Hardware status menu
-    xpath_hardware_status_menu = "//*[@data-test-id='nav-button-hardware-status']"
-    xpath_inventory_and_leds_sub_menu = "//*[@data-test-id='nav-item-inventory']"
+    xpath_hardware_status_menu = (
+        "//*[@data-test-id='nav-button-hardware-status']"
+    )
+    xpath_inventory_and_leds_sub_menu = (
+        "//*[@data-test-id='nav-item-inventory']"
+    )
     xpath_sensor_sub_menu = "//*[@data-test-id='nav-item-sensors']"
-    xpath_inventory_and_leds_heading = "//h1[contains(text(), 'Inventory and LEDs')]"
+    xpath_inventory_and_leds_heading = (
+        "//h1[contains(text(), 'Inventory and LEDs')]"
+    )
 
     # Operations menu
     xpath_operations_menu = "//*[@data-test-id='nav-button-operations']"
-    xpath_factory_reset_sub_menu = "//*[@data-test-id='nav-item-factory-reset']"
+    xpath_factory_reset_sub_menu = (
+        "//*[@data-test-id='nav-item-factory-reset']"
+    )
     xpath_firmware_update_sub_menu = "//*[@data-test-id='nav-item-firmware']"
     xpath_reboot_bmc_sub_menu = "//*[@data-test-id='nav-item-reboot-bmc']"
     xpath_host_console_sub_menu = "//*[@data-test-id='nav-item-host-console']"
-    xpath_server_power_operations_sub_menu = "//*[@data-test-id='nav-item-server-power-operations']"
+    xpath_server_power_operations_sub_menu = (
+        "//*[@data-test-id='nav-item-server-power-operations']"
+    )
     xpath_host_console_heading = "//h1[text()='Host console']"
     xpath_firmware_heading = "//h1[contains(text(), 'Firmware')]"
 
@@ -53,33 +68,49 @@
     xpath_network_heading = "//h1[text()='Network']"
     xpath_date_time_sub_menu = "//*[@data-test-id='nav-item-date-time']"
     xpath_network_sub_menu = "//*[@data-test-id='nav-item-network']"
-    xpath_power_restore_policy_sub_menu = "//*[@data-test-id='nav-item-power-restore-policy']"
+    xpath_power_restore_policy_sub_menu = (
+        "//*[@data-test-id='nav-item-power-restore-policy']"
+    )
 
     # Security and access menu
-    xpath_secuity_and_accesss_menu = "//*[@data-test-id='nav-button-security-and-access']"
+    xpath_secuity_and_accesss_menu = (
+        "//*[@data-test-id='nav-button-security-and-access']"
+    )
     xpath_sessions_sub_menu = "//*[@data-test-id='nav-item-sessions']"
     xpath_ldap_sub_menu = "//*[@data-test-id='nav-item-ldap']"
-    xpath_user_management_sub_menu = "//*[@data-test-id='nav-item-user-management']"
+    xpath_user_management_sub_menu = (
+        "//*[@data-test-id='nav-item-user-management']"
+    )
     xpath_policies_sub_menu = "//*[@data-test-id='nav-item-policies']"
     xpath_certificates_sub_menu = "//*[@data-test-id='nav-item-certificates']"
 
     # Resource management menu
-    xpath_resource_management_menu = "//*[@data-test-id='nav-button-resource-management']"
+    xpath_resource_management_menu = (
+        "//*[@data-test-id='nav-button-resource-management']"
+    )
     xpath_power_sub_menu = "//*[@data-test-id='nav-item-power']"
     xpath_power_heading = "//h1[contains(text(), 'Power')]"
 
     # Profile settings
     xpath_default_UTC = "//*[@data-test-id='profileSettings-radio-defaultUTC']"
-    xpath_profile_save_button = "//*[@data-test-id='profileSettings-button-saveSettings']"
-    xpath_input_password = "//*[@data-test-id='profileSettings-input-newPassword']"
-    xpath_input_confirm_password = "//*[@data-test-id='profileSettings-input-confirmPassword']"
+    xpath_profile_save_button = (
+        "//*[@data-test-id='profileSettings-button-saveSettings']"
+    )
+    xpath_input_password = (
+        "//*[@data-test-id='profileSettings-input-newPassword']"
+    )
+    xpath_input_confirm_password = (
+        "//*[@data-test-id='profileSettings-input-confirmPassword']"
+    )
 
     # Common variables
     xpath_save_settings_button = "//button[contains(text(),'Save')]"
     xpath_confirm_button = "//button[contains(text(),'Confirm')]"
     xpath_cancel_button = "//button[contains(text(),'Cancel')]"
     xpath_add_button = "//button[normalize-space(text())='Add']"
-    xpath_page_loading_progress_bar = "//*[@aria-label='Page loading progress bar']"
+    xpath_page_loading_progress_bar = (
+        "//*[@aria-label='Page loading progress bar']"
+    )
 
     # Reboot sub menu
     xpath_reboot_bmc_heading = "//h1[text()='Reboot BMC']"
diff --git a/gui/data/resource_variables.py b/gui/data/resource_variables.py
index 07413d7..e70a324 100644
--- a/gui/data/resource_variables.py
+++ b/gui/data/resource_variables.py
@@ -6,8 +6,7 @@
 """
 
 
-class resource_variables():
-
+class resource_variables:
     xpath_textbox_hostname = "//input[@id='host']"
     xpath_textbox_username = "//input[@id='username']"
     xpath_textbox_password = "//input[@id='password']"
@@ -27,38 +26,38 @@
     xpath_remove_button = "//button[contains(text(),'Remove')]"
     xpath_add_button = "//button[@type='submit']"
 
-    xpath_select_button_warm_reboot = \
-        "//*[@id='power__warm-boot']"
-    xpath_operation_warning_message = \
-        "//*[@class='inline__confirm active']"
+    xpath_select_button_warm_reboot = "//*[@id='power__warm-boot']"
+    xpath_operation_warning_message = "//*[@class='inline__confirm active']"
     text_warm_reboot_warning_message = "warm reboot?"
-    xpath_select_button_warm_reboot_yes = \
-        "//*[@id='power-operations']" \
+    xpath_select_button_warm_reboot_yes = (
+        "//*[@id='power-operations']"
         "/div[3]/div[3]/confirm/div/div[2]/button[1]"
+    )
 
-    xpath_select_button_cold_reboot = \
-        "//*[@id='power__cold-boot']"
+    xpath_select_button_cold_reboot = "//*[@id='power__cold-boot']"
     text_cold_reboot_warning_message = "cold reboot?"
-    xpath_select_button_cold_reboot_yes = \
-        "//*[@id='power-operations']" \
+    xpath_select_button_cold_reboot_yes = (
+        "//*[@id='power-operations']"
         "/div[3]/div[4]/confirm/div/div[2]/button[2]"
+    )
 
-    xpath_select_button_orderly_shutdown = \
-        "//*[@id='power__soft-shutdown']"
-    xpath_select_button_orderly_shutdown_button_no = \
-        "//*[@id='power-operations']/div[3]/div[5]"\
+    xpath_select_button_orderly_shutdown = "//*[@id='power__soft-shutdown']"
+    xpath_select_button_orderly_shutdown_button_no = (
+        "//*[@id='power-operations']/div[3]/div[5]"
         "/confirm/div/div[2]/button[2]"
+    )
     text_orderly_shutdown_warning_message = "orderly shutdown?"
-    xpath_select_button_orderly_shutdown_yes = \
-        "//*[@id='power-operations']/div[3]/div[5]" \
+    xpath_select_button_orderly_shutdown_yes = (
+        "//*[@id='power-operations']/div[3]/div[5]"
         "/confirm/div/div[2]/button[1]"
+    )
 
-    xpath_select_button_immediate_shutdown = \
-        "//*[@id='power__hard-shutdown']"
+    xpath_select_button_immediate_shutdown = "//*[@id='power__hard-shutdown']"
     text_immediate_shutdown_warning_message = "immediate shutdown?"
-    xpath_select_button_immediate_shutdown_yes = \
-        "//*[@id='power-operations']/div[3]/div[6]" \
+    xpath_select_button_immediate_shutdown_yes = (
+        "//*[@id='power-operations']/div[3]/div[6]"
         "/confirm/div/div[2]/button[1]"
+    )
 
     obmc_off_state = "Off"
     obmc_standby_state = "Standby"
@@ -66,13 +65,21 @@
 
     # xpath for main menu.
     xpath_select_server_control = "//button[contains(@class,'btn-control')]"
-    xpath_select_server_configuration = "//button[contains(@class,'btn-config')]"
-    xpath_select_access_control = "//button[contains(@class,'btn-access-control')]"
+    xpath_select_server_configuration = (
+        "//button[contains(@class,'btn-config')]"
+    )
+    xpath_select_access_control = (
+        "//button[contains(@class,'btn-access-control')]"
+    )
 
     # xpath for sub main menu.
-    xpath_select_server_power_operations = "//a[@href='#/server-control/power-operations']"
+    xpath_select_server_power_operations = (
+        "//a[@href='#/server-control/power-operations']"
+    )
     xpath_select_snmp_settings = "//a[@href='#/configuration/snmp']"
-    xpath_select_manage_power_usage = "//a[@href='#/server-control/power-usage']"
+    xpath_select_manage_power_usage = (
+        "//a[@href='#/server-control/power-usage']"
+    )
     xpath_select_virtual_media = "//a[@href='#/server-control/virtual-media']"
     xpath_select_sol_console = "//a[@href='#/server-control/remote-console']"
     xpath_select_reboot_bmc = "//a[@href='#/server-control/bmc-reboot']"
@@ -83,40 +90,53 @@
     xpath_select_local_users = "//a[@href='#/access-control/local-users']"
 
     # GUI header elements locators.
-    xpath_select_server_power = "//a[@href='#/server-control/power-operations']"
+    xpath_select_server_power = (
+        "//a[@href='#/server-control/power-operations']"
+    )
 
     # Server health elements locators.
-    xpath_select_refresh_button = \
-        "//*[contains(text(),'Refresh')]"
-    xpath_event_severity_all = "//*[text()='Filter by severity']/following-sibling::button[1]"
-    xpath_event_severity_high = "//*[text()='Filter by severity']/following-sibling::button[2]"
-    xpath_event_severity_medium = "//*[text()='Filter by severity']/following-sibling::button[3]"
-    xpath_event_severity_low = "//*[text()='Filter by severity']/following-sibling::button[4]"
-    xpath_drop_down_timezone_edt = \
+    xpath_select_refresh_button = "//*[contains(text(),'Refresh')]"
+    xpath_event_severity_all = (
+        "//*[text()='Filter by severity']/following-sibling::button[1]"
+    )
+    xpath_event_severity_high = (
+        "//*[text()='Filter by severity']/following-sibling::button[2]"
+    )
+    xpath_event_severity_medium = (
+        "//*[text()='Filter by severity']/following-sibling::button[3]"
+    )
+    xpath_event_severity_low = (
+        "//*[text()='Filter by severity']/following-sibling::button[4]"
+    )
+    xpath_drop_down_timezone_edt = (
         "//*[@id='event-log']/section[1]/div/div/button"
+    )
     xpath_refresh_circle = "/html/body/main/loader/div[1]/svg/circle"
-    xpath_drop_down_timezone_utc =  \
+    xpath_drop_down_timezone_utc = (
         "//*[@id='event-log']/section[1]/div/div/ul/li[2]/button"
+    )
     xpath_event_filter_all = "//*[text()='All events']"
     xpath_event_filter_resolved = "//*[text()='Resolved events']"
     xpath_event_filter_unresolved = "//*[text()='Unresolved events']"
-    xpath_event_action_bars = \
-        "//*[@id='event__actions-bar']/div[1]/label/span"
-    xpath_event_action_delete = \
+    xpath_event_action_bars = "//*[@id='event__actions-bar']/div[1]/label/span"
+    xpath_event_action_delete = (
         "//*[@id='event__actions-bar']/div[2]/div[2]/button[1]"
-    xpath_event_action_export = \
-        "//*[@id='event__actions-bar']/div[2]/div[2]/a"
-    xpath_number_of_events = \
-        "//*[@id='event__actions-bar']/div[2]/p[2]/span"
-    xpath_mark_as_resolved = \
+    )
+    xpath_event_action_export = "//*[@id='event__actions-bar']/div[2]/div[2]/a"
+    xpath_number_of_events = "//*[@id='event__actions-bar']/div[2]/p[2]/span"
+    xpath_mark_as_resolved = (
         "//*[@id='event__actions-bar']/div[2]/div[2]/button[2]"
+    )
     xpath_events_export = "//*[@id='event__actions-bar']/div[2]/div[2]/a"
     xpath_individual_event_select = "(//*[@class='control__indicator'])[2]"
-    xpath_individual_event_delete = \
+    xpath_individual_event_delete = (
         "//*[@id='event__actions-bar']/div[2]/div[2]/button[1]"
+    )
     xpath_second_event_select = "(//*[@class='control__indicator'])[3]"
-    xpath_individual_event_resolved = \
+    xpath_individual_event_resolved = (
         "//*[@id='event__actions-bar']/div[2]/div[2]/button[2]"
-    xpath_individual_event_export = \
+    )
+    xpath_individual_event_export = (
         "//*[@id='event__actions-bar']/div[2]/div[2]/a"
+    )
     xpath_select_all_events = "(//*[@class='control__indicator'])[1]"
diff --git a/gui/lib/supporting_libs.py b/gui/lib/supporting_libs.py
index 4cc3044..ae7d005 100644
--- a/gui/lib/supporting_libs.py
+++ b/gui/lib/supporting_libs.py
@@ -9,7 +9,6 @@
 import socket
 
 
-class supporting_libs():
-
+class supporting_libs:
     def get_hostname_from_ip_address(self, ip):
         return socket.gethostbyaddr(ip)[0]
diff --git a/gui/lib/utils_get_version.py b/gui/lib/utils_get_version.py
index 0c7f279..3f1d331 100755
--- a/gui/lib/utils_get_version.py
+++ b/gui/lib/utils_get_version.py
@@ -1,11 +1,19 @@
 #!/usr/bin/env python3
 
-import gen_print as gp
-import gen_cmd as gc
 import collections
 
-module_names = ['Selenium2Library', 'SeleniumLibrary', 'SSHLibrary', 'requests',
-                'XvfbRobot', 'robotremoteserver', 'redfish']
+import gen_cmd as gc
+import gen_print as gp
+
+module_names = [
+    "Selenium2Library",
+    "SeleniumLibrary",
+    "SSHLibrary",
+    "requests",
+    "XvfbRobot",
+    "robotremoteserver",
+    "redfish",
+]
 
 import_versions = collections.OrderedDict()
 
@@ -13,8 +21,13 @@
     try:
         cmd_buf = "import " + module_name
         exec(cmd_buf)
-        cmd_buf = "import_versions['" + module_name + "'] = " + module_name \
-                  + ".__version__"
+        cmd_buf = (
+            "import_versions['"
+            + module_name
+            + "'] = "
+            + module_name
+            + ".__version__"
+        )
         exec(cmd_buf)
     except ImportError:
         import_versions[module_name] = "Not installed"
@@ -50,21 +63,30 @@
 
     quiet = 1
     versions = collections.OrderedDict()
-    for package in ['python', 'python3', 'robot', 'firefox', 'google-chrome']:
+    for package in ["python", "python3", "robot", "firefox", "google-chrome"]:
         # Note: "robot --version" returns 0x00000000000000fb.
         # Note: If package does not exist, 0x7f is returned.
-        rc, version = gc.shell_cmd(package + " --version",
-                                   valid_rcs=[0, 0x7f, 0xfb])
-        versions[package] = "Not installed" if rc == 0x7f else version.rstrip('\n')
+        rc, version = gc.shell_cmd(
+            package + " --version", valid_rcs=[0, 0x7F, 0xFB]
+        )
+        versions[package] = (
+            "Not installed" if rc == 0x7F else version.rstrip("\n")
+        )
 
     versions.update(import_versions)
 
-    for package in ['robotframework-angularjs', 'robotframework-scplibrary',
-                    'robotframework-extendedselenium2library']:
-        rc, version = gc.shell_cmd("pip3 show " + package
-                                   + " | grep Version | sed -re 's/.*: //g'")
-        versions[package] = "Not installed" if not version else version.rstrip('\n')
+    for package in [
+        "robotframework-angularjs",
+        "robotframework-scplibrary",
+        "robotframework-extendedselenium2library",
+    ]:
+        rc, version = gc.shell_cmd(
+            "pip3 show " + package + " | grep Version | sed -re 's/.*: //g'"
+        )
+        versions[package] = (
+            "Not installed" if not version else version.rstrip("\n")
+        )
 
     rc, version = gc.shell_cmd("lsb_release -d -s")
-    versions["host OS"] = "Failed" if not version else version.rstrip('\n')
+    versions["host OS"] = "Failed" if not version else version.rstrip("\n")
     return versions