T6199: remove unused Python imports from migration scripts

(cherry picked from commit 489e6fababa60d9c0fbfdb421305cbe563432499)

# Conflicts:
#	src/migration-scripts/dhcp-server/9-to-10
#	src/migration-scripts/dhcpv6-server/3-to-4

58 files changed, 53 insertions, 180 deletions

diff --git a/Makefile b/Makefile
index 432de7547..44a6e35ed 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,7 @@ LIBS := -lzmq
 CFLAGS :=
 BUILD_ARCH := $(shell dpkg-architecture -q DEB_BUILD_ARCH)
 J2LINT := $(shell command -v j2lint 2> /dev/null)
-PYLINT_FILES := $(shell git ls-files *.py)
+PYLINT_FILES := $(shell git ls-files *.py src/migration-scripts)
 
 config_xml_src = $(wildcard interface-definitions/*.xml.in)
 config_xml_obj = $(config_xml_src:.xml.in=.xml)
diff --git a/smoketest/scripts/cli/test_netns.py b/smoketest/scripts/cli/test_netns.py
index 55ad7c83b..d11a5d8f1 100755
--- a/smoketest/scripts/cli/test_netns.py
+++ b/smoketest/scripts/cli/test_netns.py
@@ -16,7 +16,6 @@
 
 import unittest
 
-from netifaces import interfaces
 from base_vyostest_shim import VyOSUnitTestSHIM
 
 from vyos.utils.process import cmd
diff --git a/smoketest/scripts/cli/test_service_dhcpv6-server.py b/smoketest/scripts/cli/test_service_dhcpv6-server.py
index 4d9dabc3f..cb6206632 100755
--- a/smoketest/scripts/cli/test_service_dhcpv6-server.py
+++ b/smoketest/scripts/cli/test_service_dhcpv6-server.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2020-2022 VyOS maintainers and contributors
+# Copyright (C) 2020-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -18,7 +18,6 @@ import unittest
 
 from base_vyostest_shim import VyOSUnitTestSHIM
 
-from vyos.configsession import ConfigSessionError
 from vyos.template import inc_ip
 from vyos.utils.process import process_named_running
 from vyos.utils.file import read_file
diff --git a/src/conf_mode/protocols_ospf.py b/src/conf_mode/protocols_ospf.py
index ee29f8198..6fffe7e0d 100755
--- a/src/conf_mode/protocols_ospf.py
+++ b/src/conf_mode/protocols_ospf.py
@@ -14,8 +14,6 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-import os
-
 from sys import exit
 from sys import argv
 
diff --git a/src/conf_mode/service_dhcp-server.py b/src/conf_mode/service_dhcp-server.py
index 3cfd74a19..544b759ac 100755
--- a/src/conf_mode/service_dhcp-server.py
+++ b/src/conf_mode/service_dhcp-server.py
@@ -18,7 +18,6 @@ import os
 
 from ipaddress import ip_address
 from ipaddress import ip_network
-from netaddr import IPAddress
 from netaddr import IPRange
 from sys import exit
 
diff --git a/src/conf_mode/service_dhcpv6-server.py b/src/conf_mode/service_dhcpv6-server.py
index 427001609..5489a744e 100755
--- a/src/conf_mode/service_dhcpv6-server.py
+++ b/src/conf_mode/service_dhcpv6-server.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2018-2022 VyOS maintainers and contributors
+# Copyright (C) 2018-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -22,7 +22,6 @@ from sys import exit
 
 from vyos.config import Config
 from vyos.template import render
-from vyos.template import is_ipv6
 from vyos.utils.process import call
 from vyos.utils.dict import dict_search
 from vyos.utils.network import is_subnet_connected
diff --git a/src/helpers/vyos_config_sync.py b/src/helpers/vyos_config_sync.py
index 77f7cd810..7eec3f4f3 100755
--- a/src/helpers/vyos_config_sync.py
+++ b/src/helpers/vyos_config_sync.py
@@ -21,7 +21,7 @@ import json
 import requests
 import urllib3
 import logging
-from typing import Optional, List, Union, Dict, Any
+from typing import Optional, List, Dict, Any
 
 from vyos.config import Config
 from vyos.template import bracketize_ipv6
diff --git a/src/migration-scripts/conntrack/2-to-3 b/src/migration-scripts/conntrack/2-to-3
index 6fb457b7f..6bb42be1e 100755
--- a/src/migration-scripts/conntrack/2-to-3
+++ b/src/migration-scripts/conntrack/2-to-3
@@ -6,7 +6,6 @@
 import sys
 
 from vyos.configtree import ConfigTree
-from vyos.version import get_version
 
 if len(sys.argv) < 2:
     print('Must specify file name!')
diff --git a/src/migration-scripts/firewall/10-to-11 b/src/migration-scripts/firewall/10-to-11
index abb804a28..854d5a558 100755
--- a/src/migration-scripts/firewall/10-to-11
+++ b/src/migration-scripts/firewall/10-to-11
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2023 VyOS maintainers and contributors
+# Copyright (C) 2023-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -16,12 +16,12 @@
 
 # T5160: Firewall re-writing
 
-#  cli changes from:       
+#  cli changes from:
 #  set firewall name <name> ...
 #  set firewall ipv6-name <name> ...
 #  To
-#  set firewall ipv4 name <name> 
-#  set firewall ipv6 name <name> 
+#  set firewall ipv4 name <name>
+#  set firewall ipv6 name <name>
 
 ## Also from 'firewall interface' removed.
 ## in and out:
@@ -37,13 +37,10 @@
     # set firewall [ipv4 | ipv6] input filter rule <5,10,15,...> action jump
     # set firewall [ipv4 | ipv6] input filter rule <5,10,15,...> jump-target <name>
 
-import re
-
 from sys import argv
 from sys import exit
 
 from vyos.configtree import ConfigTree
-from vyos.ifconfig import Section
 
 if len(argv) < 2:
     print("Must specify file name!")
@@ -207,4 +204,4 @@ try:
         f.write(config.to_string())
 except OSError as e:
     print("Failed to save the modified config: {}".format(e))
-    exit(1)
\ No newline at end of file
+    exit(1)
diff --git a/src/migration-scripts/firewall/11-to-12 b/src/migration-scripts/firewall/11-to-12
index ba8374d66..f9122e74c 100755
--- a/src/migration-scripts/firewall/11-to-12
+++ b/src/migration-scripts/firewall/11-to-12
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2023 VyOS maintainers and contributors
+# Copyright (C) 2023-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -22,13 +22,10 @@
     # set firewall ... rule <rule> [inbound-interface | outboubd-interface] name <iface>
     # set firewall ... rule <rule> [inbound-interface | outboubd-interface] group <iface_group>
 
-import re
-
 from sys import argv
 from sys import exit
 
 from vyos.configtree import ConfigTree
-from vyos.ifconfig import Section
 
 if len(argv) < 2:
     print("Must specify file name!")
@@ -71,4 +68,4 @@ try:
         f.write(config.to_string())
 except OSError as e:
     print("Failed to save the modified config: {}".format(e))
-    exit(1)
\ No newline at end of file
+    exit(1)
diff --git a/src/migration-scripts/firewall/12-to-13 b/src/migration-scripts/firewall/12-to-13
index 8396dd9d1..d72ba834d 100755
--- a/src/migration-scripts/firewall/12-to-13
+++ b/src/migration-scripts/firewall/12-to-13
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2023 VyOS maintainers and contributors
+# Copyright (C) 2023-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -25,13 +25,10 @@
     # set firewall ... rule <rule> state <state>
     # Remove command if log=disable or <state>=disable
 
-import re
-
 from sys import argv
 from sys import exit
 
 from vyos.configtree import ConfigTree
-from vyos.ifconfig import Section
 
 if len(argv) < 2:
     print("Must specify file name!")
@@ -89,4 +86,4 @@ try:
         f.write(config.to_string())
 except OSError as e:
     print("Failed to save the modified config: {}".format(e))
-    exit(1)
\ No newline at end of file
+    exit(1)
diff --git a/src/migration-scripts/firewall/7-to-8 b/src/migration-scripts/firewall/7-to-8
index d06c3150a..bbaba113a 100755
--- a/src/migration-scripts/firewall/7-to-8
+++ b/src/migration-scripts/firewall/7-to-8
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2022 VyOS maintainers and contributors
+# Copyright (C) 2022-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -17,13 +17,10 @@
 # T2199: Migrate interface firewall nodes to firewall interfaces <ifname> <direction> name/ipv6-name <name>
 # T2199: Migrate zone-policy to firewall node
 
-import re
-
 from sys import argv
 from sys import exit
 
 from vyos.configtree import ConfigTree
-from vyos.ifconfig import Section
 
 if len(argv) < 2:
     print("Must specify file name!")
diff --git a/src/migration-scripts/firewall/8-to-9 b/src/migration-scripts/firewall/8-to-9
index d7647354a..6e019beb2 100755
--- a/src/migration-scripts/firewall/8-to-9
+++ b/src/migration-scripts/firewall/8-to-9
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2022 VyOS maintainers and contributors
+# Copyright (C) 2022-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -15,18 +15,15 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 # T4780: Add firewall interface group
-#  cli changes from:       
+#  cli changes from:
 #  set firewall [name | ipv6-name] <name> rule <number> [inbound-interface | outbound-interface] <interface_name>
 #  To
 #  set firewall [name | ipv6-name] <name> rule <number> [inbound-interface | outbound-interface]  [interface-name | interface-group] <interface_name | interface_group>
 
-import re
-
 from sys import argv
 from sys import exit
 
 from vyos.configtree import ConfigTree
-from vyos.ifconfig import Section
 
 if len(argv) < 2:
     print("Must specify file name!")
@@ -88,4 +85,4 @@ try:
         f.write(config.to_string())
 except OSError as e:
     print("Failed to save the modified config: {}".format(e))
-    exit(1)
\ No newline at end of file
+    exit(1)
diff --git a/src/migration-scripts/firewall/9-to-10 b/src/migration-scripts/firewall/9-to-10
index a70460718..ce509a731 100755
--- a/src/migration-scripts/firewall/9-to-10
+++ b/src/migration-scripts/firewall/9-to-10
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2023 VyOS maintainers and contributors
+# Copyright (C) 2023-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -15,18 +15,15 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 # T5050: Log options
-#  cli changes from:       
+#  cli changes from:
 #  set firewall [name | ipv6-name] <name> rule <number> log-level <log_level>
 #  To
 #  set firewall [name | ipv6-name] <name> rule <number> log-options level <log_level>
 
-import re
-
 from sys import argv
 from sys import exit
 
 from vyos.configtree import ConfigTree
-from vyos.ifconfig import Section
 
 if len(argv) < 2:
     print("Must specify file name!")
@@ -50,7 +47,7 @@ if config.exists(base + ['name']):
             continue
 
         for rule in config.list_nodes(base + ['name', name, 'rule']):
-            log_options_base = base + ['name', name, 'rule', rule, 'log-options'] 
+            log_options_base = base + ['name', name, 'rule', rule, 'log-options']
             rule_log_level = base + ['name', name, 'rule', rule, 'log-level']
 
             if config.exists(rule_log_level):
@@ -64,7 +61,7 @@ if config.exists(base + ['ipv6-name']):
             continue
 
         for rule in config.list_nodes(base + ['ipv6-name', name, 'rule']):
-            log_options_base = base + ['ipv6-name', name, 'rule', rule, 'log-options'] 
+            log_options_base = base + ['ipv6-name', name, 'rule', rule, 'log-options']
             rule_log_level = base + ['ipv6-name', name, 'rule', rule, 'log-level']
 
             if config.exists(rule_log_level):
@@ -77,4 +74,4 @@ try:
         f.write(config.to_string())
 except OSError as e:
     print("Failed to save the modified config: {}".format(e))
-    exit(1)
\ No newline at end of file
+    exit(1)
diff --git a/src/migration-scripts/interfaces/26-to-27 b/src/migration-scripts/interfaces/26-to-27
index 4967a29fa..429ab650f 100755
--- a/src/migration-scripts/interfaces/26-to-27
+++ b/src/migration-scripts/interfaces/26-to-27
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2022 VyOS maintainers and contributors
+# Copyright (C) 2022-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -18,8 +18,6 @@
 #        present for DHCP
 
 from sys import argv
-
-from vyos.ethtool import Ethtool
 from vyos.configtree import ConfigTree
 
 if len(argv) < 2:
diff --git a/src/migration-scripts/interfaces/27-to-28 b/src/migration-scripts/interfaces/27-to-28
index a0d043d11..9f5e93b5f 100755
--- a/src/migration-scripts/interfaces/27-to-28
+++ b/src/migration-scripts/interfaces/27-to-28
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2023 VyOS maintainers and contributors
+# Copyright (C) 2023-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -19,7 +19,6 @@
 
 from sys import argv
 
-from vyos.ethtool import Ethtool
 from vyos.configtree import ConfigTree
 
 if len(argv) < 2:
diff --git a/src/migration-scripts/interfaces/28-to-29 b/src/migration-scripts/interfaces/28-to-29
index ad5bfa653..0437977dc 100755
--- a/src/migration-scripts/interfaces/28-to-29
+++ b/src/migration-scripts/interfaces/28-to-29
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2023 VyOS maintainers and contributors
+# Copyright (C) 2023-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -18,8 +18,6 @@
 #        valueless node.
 
 from sys import argv
-
-from vyos.ethtool import Ethtool
 from vyos.configtree import ConfigTree
 
 if len(argv) < 2:
diff --git a/src/migration-scripts/interfaces/29-to-30 b/src/migration-scripts/interfaces/29-to-30
index acb6ee1fb..80aad1d44 100755
--- a/src/migration-scripts/interfaces/29-to-30
+++ b/src/migration-scripts/interfaces/29-to-30
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2023 VyOS maintainers and contributors
+# Copyright (C) 2023-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -17,8 +17,6 @@
 # T5286: remove XDP support in favour of VPP
 
 from sys import argv
-
-from vyos.ethtool import Ethtool
 from vyos.configtree import ConfigTree
 
 if len(argv) < 2:
diff --git a/src/migration-scripts/ipoe-server/0-to-1 b/src/migration-scripts/ipoe-server/0-to-1
index ac9d13abc..a6dd46ac1 100755
--- a/src/migration-scripts/ipoe-server/0-to-1
+++ b/src/migration-scripts/ipoe-server/0-to-1
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2022 VyOS maintainers and contributors
+# Copyright (C) 2022-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -20,9 +20,6 @@
 # mac-address -> mac
 # network-mode -> mode
 
-import os
-import sys
-
 from sys import argv, exit
 from vyos.configtree import ConfigTree
 
diff --git a/src/migration-scripts/ipoe-server/1-to-2 b/src/migration-scripts/ipoe-server/1-to-2
index 11d7911e9..378702693 100755
--- a/src/migration-scripts/ipoe-server/1-to-2
+++ b/src/migration-scripts/ipoe-server/1-to-2
@@ -23,8 +23,6 @@
 #       1. The first pool that contains next-poll.
 #       2. Else, the first pool in the list
 
-import os
-
 from sys import argv
 from sys import exit
 from vyos.configtree import ConfigTree
diff --git a/src/migration-scripts/ipoe-server/2-to-3 b/src/migration-scripts/ipoe-server/2-to-3
index d4ae0a7ba..0909315a8 100755
--- a/src/migration-scripts/ipoe-server/2-to-3
+++ b/src/migration-scripts/ipoe-server/2-to-3
@@ -16,13 +16,10 @@
 
 # Migrating to named ipv6 pools
 
-import os
-
 from sys import argv
 from sys import exit
 from vyos.configtree import ConfigTree
 
-
 if len(argv) < 2:
     print("Must specify file name!")
     exit(1)
diff --git a/src/migration-scripts/ipsec/11-to-12 b/src/migration-scripts/ipsec/11-to-12
index e34882c23..4833d0876 100755
--- a/src/migration-scripts/ipsec/11-to-12
+++ b/src/migration-scripts/ipsec/11-to-12
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2023 VyOS maintainers and contributors
+# Copyright (C) 2023-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -16,8 +16,6 @@
 
 # Remove legacy ipsec.conf and ipsec.secrets - Not supported with swanctl
 
-import re
-
 from sys import argv
 from sys import exit
 
diff --git a/src/migration-scripts/ipsec/12-to-13 b/src/migration-scripts/ipsec/12-to-13
index c11f708bd..d90c70314 100755
--- a/src/migration-scripts/ipsec/12-to-13
+++ b/src/migration-scripts/ipsec/12-to-13
@@ -17,8 +17,6 @@
 # Changed value of dead-peer-detection.action from hold to trap
 # Changed value of close-action from hold to trap and from restart to start
 
-import re
-
 from sys import argv
 from sys import exit
 
diff --git a/src/migration-scripts/ipsec/7-to-8 b/src/migration-scripts/ipsec/7-to-8
index e002db0b1..9acc737d5 100755
--- a/src/migration-scripts/ipsec/7-to-8
+++ b/src/migration-scripts/ipsec/7-to-8
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2021 VyOS maintainers and contributors
+# Copyright (C) 2021-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -26,7 +26,6 @@ from sys import argv
 from sys import exit
 
 from vyos.configtree import ConfigTree
-from vyos.pki import load_public_key
 from vyos.pki import load_private_key
 from vyos.pki import encode_public_key
 from vyos.pki import encode_private_key
diff --git a/src/migration-scripts/ipsec/9-to-10 b/src/migration-scripts/ipsec/9-to-10
index a4a71d38e..bc10e1997 100755
--- a/src/migration-scripts/ipsec/9-to-10
+++ b/src/migration-scripts/ipsec/9-to-10
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2022 VyOS maintainers and contributors
+# Copyright (C) 2022-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -20,9 +20,6 @@ from sys import argv
 from sys import exit
 
 from vyos.configtree import ConfigTree
-from vyos.template import is_ipv4
-from vyos.template import is_ipv6
-
 
 if len(argv) < 2:
     print("Must specify file name!")
diff --git a/src/migration-scripts/l2tp/2-to-3 b/src/migration-scripts/l2tp/2-to-3
index b46b0f22e..8527c2d4a 100755
--- a/src/migration-scripts/l2tp/2-to-3
+++ b/src/migration-scripts/l2tp/2-to-3
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2020 VyOS maintainers and contributors
+# Copyright (C) 2020-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -17,9 +17,6 @@
 # - remove primary/secondary identifier from nameserver
 # - TODO: remove radius server req-limit
 
-import os
-import sys
-
 from sys import argv, exit
 from vyos.configtree import ConfigTree
 
@@ -38,7 +35,6 @@ if not config.exists(base):
     # Nothing to do
     exit(0)
 else:
-
     # Migrate IPv4 DNS servers
     dns_base = base + ['dns-servers']
     if config.exists(dns_base):
diff --git a/src/migration-scripts/l2tp/3-to-4 b/src/migration-scripts/l2tp/3-to-4
index 8c2b909b7..14b86ff04 100755
--- a/src/migration-scripts/l2tp/3-to-4
+++ b/src/migration-scripts/l2tp/3-to-4
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2021-2023 VyOS maintainers and contributors
+# Copyright (C) 2021-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -23,7 +23,6 @@ from sys import argv
 from sys import exit
 from vyos.configtree import ConfigTree
 from vyos.pki import load_certificate
-from vyos.pki import load_crl
 from vyos.pki import load_private_key
 from vyos.pki import encode_certificate
 from vyos.pki import encode_private_key
diff --git a/src/migration-scripts/l2tp/4-to-5 b/src/migration-scripts/l2tp/4-to-5
index 3176f895a..b7f4d2677 100755
--- a/src/migration-scripts/l2tp/4-to-5
+++ b/src/migration-scripts/l2tp/4-to-5
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2023 VyOS maintainers and contributors
+# Copyright (C) 2023-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -19,8 +19,6 @@
 #       'subnet' migrate to namedpool 'default-subnet-pool'
 #       'default-subnet-pool' is the next pool for 'default-range-pool'
 
-import os
-
 from sys import argv
 from sys import exit
 from vyos.configtree import ConfigTree
diff --git a/src/migration-scripts/l2tp/5-to-6 b/src/migration-scripts/l2tp/5-to-6
index ca0b13dcc..ac40b89c8 100755
--- a/src/migration-scripts/l2tp/5-to-6
+++ b/src/migration-scripts/l2tp/5-to-6
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2023 VyOS maintainers and contributors
+# Copyright (C) 2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -14,14 +14,10 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-
-import os
-
 from sys import argv
 from sys import exit
 from vyos.configtree import ConfigTree
 
-
 if len(argv) < 2:
     print("Must specify file name!")
     exit(1)
diff --git a/src/migration-scripts/l2tp/6-to-7 b/src/migration-scripts/l2tp/6-to-7
index f49c4ab08..1c536585c 100755
--- a/src/migration-scripts/l2tp/6-to-7
+++ b/src/migration-scripts/l2tp/6-to-7
@@ -16,13 +16,10 @@
 
 # Migrating to named ipv6 pools
 
-import os
-
 from sys import argv
 from sys import exit
 from vyos.configtree import ConfigTree
 
-
 if len(argv) < 2:
     print("Must specify file name!")
     exit(1)
diff --git a/src/migration-scripts/l2tp/7-to-8 b/src/migration-scripts/l2tp/7-to-8
index 4956e1155..e429ed057 100755
--- a/src/migration-scripts/l2tp/7-to-8
+++ b/src/migration-scripts/l2tp/7-to-8
@@ -17,13 +17,10 @@
 # Migrate from 'ccp-disable' to 'ppp-options.disable-ccp'
 # Migration ipv6 options
 
-import os
-
 from sys import argv
 from sys import exit
 from vyos.configtree import ConfigTree
 
-
 if len(argv) < 2:
     print("Must specify file name!")
     exit(1)
diff --git a/src/migration-scripts/l2tp/8-to-9 b/src/migration-scripts/l2tp/8-to-9
index e85a3892b..672180e25 100755
--- a/src/migration-scripts/l2tp/8-to-9
+++ b/src/migration-scripts/l2tp/8-to-9
@@ -16,13 +16,10 @@
 
 # Deleted 'dhcp-interface' from l2tp
 
-import os
-
 from sys import argv
 from sys import exit
 from vyos.configtree import ConfigTree
 
-
 if len(argv) < 2:
     print("Must specify file name!")
     exit(1)
@@ -37,7 +34,7 @@ base = ['vpn', 'l2tp', 'remote-access']
 if not config.exists(base):
     exit(0)
 
-#deleting unused dhcp-interface
+# deleting unused dhcp-interface
 if config.exists(base + ['dhcp-interface']):
     config.delete(base + ['dhcp-interface'])
 
diff --git a/src/migration-scripts/openconnect/0-to-1 b/src/migration-scripts/openconnect/0-to-1
index 8be15fad1..c64b16cb2 100755
--- a/src/migration-scripts/openconnect/0-to-1
+++ b/src/migration-scripts/openconnect/0-to-1
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2021-2023 VyOS maintainers and contributors
+# Copyright (C) 2021-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -22,7 +22,6 @@ from sys import argv
 from sys import exit
 from vyos.configtree import ConfigTree
 from vyos.pki import load_certificate
-from vyos.pki import load_crl
 from vyos.pki import load_private_key
 from vyos.pki import encode_certificate
 from vyos.pki import encode_private_key
diff --git a/src/migration-scripts/policy/4-to-5 b/src/migration-scripts/policy/4-to-5
index 5b8fee17e..738850f67 100755
--- a/src/migration-scripts/policy/4-to-5
+++ b/src/migration-scripts/policy/4-to-5
@@ -16,13 +16,10 @@
 
 # T2199: Migrate interface policy nodes to policy route <name> interface <ifname>
 
-import re
-
 from sys import argv
 from sys import exit
 
 from vyos.configtree import ConfigTree
-from vyos.ifconfig import Section
 
 if len(argv) < 2:
     print("Must specify file name!")
diff --git a/src/migration-scripts/policy/5-to-6 b/src/migration-scripts/policy/5-to-6
index f1545cddb..86287d578 100755
--- a/src/migration-scripts/policy/5-to-6
+++ b/src/migration-scripts/policy/5-to-6
@@ -16,13 +16,10 @@
 
 # T5165: Migrate policy local-route rule <tag> destination|source
 
-import re
-
 from sys import argv
 from sys import exit
 
 from vyos.configtree import ConfigTree
-from vyos.ifconfig import Section
 
 if len(argv) < 2:
     print("Must specify file name!")
diff --git a/src/migration-scripts/policy/6-to-7 b/src/migration-scripts/policy/6-to-7
index e07822ffd..cdefc6837 100755
--- a/src/migration-scripts/policy/6-to-7
+++ b/src/migration-scripts/policy/6-to-7
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2023 VyOS maintainers and contributors
+# Copyright (C) 2023-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -22,13 +22,10 @@
     # set policy [route | route6] ... rule <rule> log
     # Remove command if log=disable
 
-import re
-
 from sys import argv
 from sys import exit
 
 from vyos.configtree import ConfigTree
-from vyos.ifconfig import Section
 
 if len(argv) < 2:
     print("Must specify file name!")
@@ -76,4 +73,4 @@ try:
         f.write(config.to_string())
 except OSError as e:
     print("Failed to save the modified config: {}".format(e))
-    exit(1)
\ No newline at end of file
+    exit(1)
diff --git a/src/migration-scripts/pppoe-server/1-to-2 b/src/migration-scripts/pppoe-server/1-to-2
index c73899ca1..b266893c0 100755
--- a/src/migration-scripts/pppoe-server/1-to-2
+++ b/src/migration-scripts/pppoe-server/1-to-2
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2020 VyOS maintainers and contributors
+# Copyright (C) 2020-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -16,8 +16,6 @@
 
 # change mppe node to a leaf node with value prefer
 
-import os
-
 from sys import argv, exit
 from vyos.configtree import ConfigTree
 
@@ -58,4 +56,3 @@ else:
     except OSError as e:
         print("Failed to save the modified config: {}".format(e))
         exit(1)
-
diff --git a/src/migration-scripts/pppoe-server/3-to-4 b/src/migration-scripts/pppoe-server/3-to-4
index c07bbb1df..477ed6f22 100755
--- a/src/migration-scripts/pppoe-server/3-to-4
+++ b/src/migration-scripts/pppoe-server/3-to-4
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2020 VyOS maintainers and contributors
+# Copyright (C) 2020-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -16,8 +16,6 @@
 
 # - remove primary/secondary identifier from nameserver
 
-import os
-
 from sys import argv, exit
 from vyos.configtree import ConfigTree
 
diff --git a/src/migration-scripts/pppoe-server/6-to-7 b/src/migration-scripts/pppoe-server/6-to-7
index b94ce57f9..d51c1c9d8 100755
--- a/src/migration-scripts/pppoe-server/6-to-7
+++ b/src/migration-scripts/pppoe-server/6-to-7
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2023 VyOS maintainers and contributors
+# Copyright (C) 2023-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -24,8 +24,6 @@
 #       If there are not named pools, namedless pool will be default.
 #       2. If authentication mode = 'radius' then namedless pool will be default
 
-import os
-
 from sys import argv
 from sys import exit
 from vyos.configtree import ConfigTree
diff --git a/src/migration-scripts/pppoe-server/7-to-8 b/src/migration-scripts/pppoe-server/7-to-8
index b0d9bb464..0381f0bf9 100755
--- a/src/migration-scripts/pppoe-server/7-to-8
+++ b/src/migration-scripts/pppoe-server/7-to-8
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2023 VyOS maintainers and contributors
+# Copyright (C) 2023-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -16,13 +16,10 @@
 
 # Migrating to named ipv6 pools
 
-import os
-
 from sys import argv
 from sys import exit
 from vyos.configtree import ConfigTree
 
-
 if len(argv) < 2:
     print("Must specify file name!")
     exit(1)
diff --git a/src/migration-scripts/pppoe-server/8-to-9 b/src/migration-scripts/pppoe-server/8-to-9
index ad75c28a1..4932a766f 100755
--- a/src/migration-scripts/pppoe-server/8-to-9
+++ b/src/migration-scripts/pppoe-server/8-to-9
@@ -17,13 +17,10 @@
 # Change from 'ccp' to 'disable-ccp' in ppp-option section
 # Migration ipv6 options
 
-import os
-
 from sys import argv
 from sys import exit
 from vyos.configtree import ConfigTree
 
-
 if len(argv) < 2:
     print("Must specify file name!")
     exit(1)
diff --git a/src/migration-scripts/pptp/2-to-3 b/src/migration-scripts/pptp/2-to-3
index 091cb68ec..42c4dedf4 100755
--- a/src/migration-scripts/pptp/2-to-3
+++ b/src/migration-scripts/pptp/2-to-3
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2023 VyOS maintainers and contributors
+# Copyright (C) 2023-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -18,8 +18,6 @@
 #       'start-stop' migrate to namedpool 'default-range-pool'
 #       'default-subnet-pool' is the next pool for 'default-range-pool'
 
-import os
-
 from sys import argv
 from sys import exit
 from vyos.configtree import ConfigTree
diff --git a/src/migration-scripts/pptp/3-to-4 b/src/migration-scripts/pptp/3-to-4
index 0a8dad2f4..ebd343028 100755
--- a/src/migration-scripts/pptp/3-to-4
+++ b/src/migration-scripts/pptp/3-to-4
@@ -16,13 +16,10 @@
 
 # - Move 'mppe' from 'authentication' node to 'ppp-options'
 
-import os
-
 from sys import argv
 from sys import exit
 from vyos.configtree import ConfigTree
 
-
 if len(argv) < 2:
     print("Must specify file name!")
     exit(1)
diff --git a/src/migration-scripts/pptp/4-to-5 b/src/migration-scripts/pptp/4-to-5
index d4b3f9a14..83632b6d8 100755
--- a/src/migration-scripts/pptp/4-to-5
+++ b/src/migration-scripts/pptp/4-to-5
@@ -17,13 +17,10 @@
 # - Move 'require' from 'protocols' in  'authentication' node
 # - Migrate to new default values in radius timeout and acct-timeout
 
-import os
-
 from sys import argv
 from sys import exit
 from vyos.configtree import ConfigTree
 
-
 if len(argv) < 2:
     print("Must specify file name!")
     exit(1)
diff --git a/src/migration-scripts/snmp/2-to-3 b/src/migration-scripts/snmp/2-to-3
index 30911aa27..ab9b5dcba 100755
--- a/src/migration-scripts/snmp/2-to-3
+++ b/src/migration-scripts/snmp/2-to-3
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2022 VyOS maintainers and contributors
+# Copyright (C) 2022-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -20,13 +20,10 @@
 #  To
 #  set service snmp oid-enable ip-forward
 
-import re
-
 from sys import argv
 from sys import exit
 
 from vyos.configtree import ConfigTree
-from vyos.ifconfig import Section
 
 if len(argv) < 2:
     print("Must specify file name!")
diff --git a/src/migration-scripts/sstp/0-to-1 b/src/migration-scripts/sstp/0-to-1
index e2fe1ea8f..150127aaf 100755
--- a/src/migration-scripts/sstp/0-to-1
+++ b/src/migration-scripts/sstp/0-to-1
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2020 VyOS maintainers and contributors
+# Copyright (C) 2020-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -23,7 +23,6 @@
 #   - do not migrate radius server req-limit, use default of unlimited
 # - migrate SSL certificate path
 
-import os
 import sys
 
 from vyos.configtree import ConfigTree
diff --git a/src/migration-scripts/sstp/3-to-4 b/src/migration-scripts/sstp/3-to-4
index 00ca7a52d..5b7757e60 100755
--- a/src/migration-scripts/sstp/3-to-4
+++ b/src/migration-scripts/sstp/3-to-4
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2021-2023 VyOS maintainers and contributors
+# Copyright (C) 2021-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -22,7 +22,6 @@ from sys import argv
 from sys import exit
 from vyos.configtree import ConfigTree
 from vyos.pki import load_certificate
-from vyos.pki import load_crl
 from vyos.pki import load_private_key
 from vyos.pki import encode_certificate
 from vyos.pki import encode_private_key
diff --git a/src/migration-scripts/sstp/4-to-5 b/src/migration-scripts/sstp/4-to-5
index 95e482713..6907240a0 100755
--- a/src/migration-scripts/sstp/4-to-5
+++ b/src/migration-scripts/sstp/4-to-5
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2023 VyOS maintainers and contributors
+# Copyright (C) 2023-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -18,13 +18,10 @@
 #       'subnet' migrate to namedpool 'default-subnet-pool'
 #       'default-subnet-pool' is the next pool for 'default-range-pool'
 
-import os
-
 from sys import argv
 from sys import exit
 from vyos.configtree import ConfigTree
 
-
 if len(argv) < 2:
     print("Must specify file name!")
     exit(1)
diff --git a/src/migration-scripts/sstp/5-to-6 b/src/migration-scripts/sstp/5-to-6
index bac9975b2..43b99044d 100755
--- a/src/migration-scripts/sstp/5-to-6
+++ b/src/migration-scripts/sstp/5-to-6
@@ -16,14 +16,10 @@
 
 # Migrating to named ipv6 pools
 
-import os
-import pprint
-
 from sys import argv
 from sys import exit
 from vyos.configtree import ConfigTree
 
-
 if len(argv) < 2:
     print("Must specify file name!")
     exit(1)
diff --git a/src/migration-scripts/system/15-to-16 b/src/migration-scripts/system/15-to-16
index aa1c34032..2944cdb1e 100755
--- a/src/migration-scripts/system/15-to-16
+++ b/src/migration-scripts/system/15-to-16
@@ -2,7 +2,6 @@
 #
 # Make 'system options reboot-on-panic' valueless
 
-import os
 import sys
 
 from vyos.configtree import ConfigTree
diff --git a/src/migration-scripts/system/16-to-17 b/src/migration-scripts/system/16-to-17
index 37e02611d..afa171a9b 100755
--- a/src/migration-scripts/system/16-to-17
+++ b/src/migration-scripts/system/16-to-17
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2020 VyOS maintainers and contributors
+# Copyright (C) 2020-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -20,7 +20,6 @@
 #   This is the only privilege level left and also the default, what is the
 #   sense in keeping this orphaned node?
 
-import os
 import sys
 
 from vyos.configtree import ConfigTree
diff --git a/src/migration-scripts/system/19-to-20 b/src/migration-scripts/system/19-to-20
index c04e6a5a6..177173c50 100755
--- a/src/migration-scripts/system/19-to-20
+++ b/src/migration-scripts/system/19-to-20
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2020 VyOS maintainers and contributors
+# Copyright (C) 2020-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -16,8 +16,6 @@
 
 # T3048: remove smp-affinity node from ethernet and use tuned instead
 
-import os
-
 from sys import exit, argv
 from vyos.configtree import ConfigTree
 
diff --git a/src/migration-scripts/system/20-to-21 b/src/migration-scripts/system/20-to-21
index 4bcf4edab..24e042ce2 100755
--- a/src/migration-scripts/system/20-to-21
+++ b/src/migration-scripts/system/20-to-21
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2021 VyOS maintainers and contributors
+# Copyright (C) 2021-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -16,8 +16,6 @@
 
 # T3795: merge "system name-servers-dhcp" into "system name-server"
 
-import os
-
 from sys import argv
 from vyos.configtree import ConfigTree
 
diff --git a/src/migration-scripts/system/21-to-22 b/src/migration-scripts/system/21-to-22
index 810b634ab..2a1b603c6 100755
--- a/src/migration-scripts/system/21-to-22
+++ b/src/migration-scripts/system/21-to-22
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2021 VyOS maintainers and contributors
+# Copyright (C) 2021-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -14,8 +14,6 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-import os
-
 from sys import exit, argv
 from vyos.configtree import ConfigTree
 
diff --git a/src/migration-scripts/system/22-to-23 b/src/migration-scripts/system/22-to-23
index 8ed198383..f83279b88 100755
--- a/src/migration-scripts/system/22-to-23
+++ b/src/migration-scripts/system/22-to-23
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2022 VyOS maintainers and contributors
+# Copyright (C) 2022-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -14,8 +14,6 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-import os
-
 from sys import exit, argv
 from vyos.configtree import ConfigTree
 
diff --git a/src/migration-scripts/system/23-to-24 b/src/migration-scripts/system/23-to-24
index fd68dbf22..1fd61d83b 100755
--- a/src/migration-scripts/system/23-to-24
+++ b/src/migration-scripts/system/23-to-24
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2022 VyOS maintainers and contributors
+# Copyright (C) 2022-2024 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
@@ -14,8 +14,6 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-import os
-
 from ipaddress import ip_interface
 from ipaddress import ip_address
 from sys import exit, argv
diff --git a/src/op_mode/clear_dhcp_lease.py b/src/op_mode/clear_dhcp_lease.py
index f372d3af0..b37b62bca 100755
--- a/src/op_mode/clear_dhcp_lease.py
+++ b/src/op_mode/clear_dhcp_lease.py
@@ -3,7 +3,6 @@
 import argparse
 import re
 
-from isc_dhcp_leases import Lease
 from isc_dhcp_leases import IscDhcpLeases
 
 from vyos.configquery import ConfigTreeQuery
diff --git a/src/op_mode/dhcp.py b/src/op_mode/dhcp.py
index 2f90865fd..a7143d664 100755
--- a/src/op_mode/dhcp.py
+++ b/src/op_mode/dhcp.py
@@ -29,9 +29,6 @@ import vyos.opmode
 from vyos.base import Warning
 from vyos.configquery import ConfigTreeQuery
 
-from vyos.utils.dict import dict_search
-from vyos.utils.file import read_file
-from vyos.utils.process import cmd
 from vyos.utils.process import is_systemd_service_running
 from vyos.utils.process import call