diff --git a/gns3server/compute/docker/__init__.py b/gns3server/compute/docker/__init__.py
index a6b1d4dae..bc643ee67 100644
--- a/gns3server/compute/docker/__init__.py
+++ b/gns3server/compute/docker/__init__.py
@@ -18,28 +18,29 @@
 Docker server module.
 """
 
-import os
-import sys
-import json
 import asyncio
+import json
 import logging
-import aiohttp
+import os
 import shutil
+import sys
+
+import aiohttp
 import platformdirs
 
-from gns3server.utils import parse_version
-from gns3server.config import Config
-from gns3server.utils.asyncio import locking
 from gns3server.compute.base_manager import BaseManager
-from gns3server.compute.docker.docker_vm import DockerVM
-from gns3server.compute.docker.vendor_docker_vm import VendorDockerVM
-from gns3server.compute.docker.iol_docker_vm import IOLDockerVM
 from gns3server.compute.docker.docker_error import (
     DockerError,
     DockerHttp304Error,
     DockerHttp404Error,
     DockerHttp409Error,
 )
+from gns3server.compute.docker.docker_vm import DockerVM
+from gns3server.compute.docker.iol_docker_vm import IOLDockerVM
+from gns3server.compute.docker.vendor_docker_vm import VendorDockerVM
+from gns3server.config import Config
+from gns3server.utils import parse_version
+from gns3server.utils.asyncio import locking
 
 log = logging.getLogger(__name__)
 
diff --git a/gns3server/compute/docker/docker_vm.py b/gns3server/compute/docker/docker_vm.py
index 4837a8693..4c33c311f 100644
--- a/gns3server/compute/docker/docker_vm.py
+++ b/gns3server/compute/docker/docker_vm.py
@@ -18,38 +18,35 @@
 Docker container instance.
 """
 
-import sys
 import asyncio
 import contextlib
 import json
-import shutil
-import psutil
-import shlex
-import aiohttp
-import subprocess
+import logging
 import os
 import re
+import shlex
+import shutil
+import subprocess
+import sys
 
+import aiohttp
+import psutil
+
+from gns3server.compute.compute_error import ComputeError
+from gns3server.compute.ubridge.ubridge_error import UbridgeError, UbridgeNamespaceError
+from gns3server.utils import int_to_macaddress, macaddress_to_int
+from gns3server.utils.asyncio import monitor_process, wait_for_file_creation, wait_run_in_executor
+from gns3server.utils.asyncio.raw_command_server import AsyncioRawCommandServer
 from gns3server.utils.asyncio.ssh_server import AsyncioSSHServer
 from gns3server.utils.asyncio.telnet_server import AsyncioTelnetServer
-from gns3server.utils.asyncio.raw_command_server import AsyncioRawCommandServer
-from gns3server.utils.asyncio import wait_for_file_creation
-from gns3server.utils.asyncio import monitor_process
-from gns3server.utils.asyncio import wait_run_in_executor
 from gns3server.utils.get_resource import get_resource
 from gns3server.utils.hostname import is_rfc1123_hostname_valid
-from gns3server.utils import macaddress_to_int, int_to_macaddress
-
-from gns3server.compute.ubridge.ubridge_error import UbridgeError, UbridgeNamespaceError
-from gns3server.compute.compute_error import ComputeError
-from ..base_node import BaseNode
 
 from ..adapters.ethernet_adapter import EthernetAdapter
+from ..base_node import BaseNode
+from ..error import ImageMissingError
 from ..nios.nio_udp import NIOUDP
 from .docker_error import DockerError, DockerHttp304Error, DockerHttp404Error, DockerHttp409Error
-from ..error import ImageMissingError
-
-import logging
 
 log = logging.getLogger(__name__)
 
diff --git a/gns3server/compute/docker/vendor_docker_vm.py b/gns3server/compute/docker/vendor_docker_vm.py
index 1adb5a951..33af64e15 100644
--- a/gns3server/compute/docker/vendor_docker_vm.py
+++ b/gns3server/compute/docker/vendor_docker_vm.py
@@ -34,10 +34,10 @@ import os
 import shutil
 import tempfile
 
+from gns3server.compute.docker.docker_error import DockerError, DockerHttp304Error, DockerHttp404Error
+from gns3server.compute.docker.docker_vm import DockerVM
 from gns3server.utils.asyncio import wait_for_file_creation
 from gns3server.utils.asyncio.telnet_server import AsyncioTelnetServer
-from gns3server.compute.docker.docker_vm import DockerVM
-from gns3server.compute.docker.docker_error import DockerError, DockerHttp304Error, DockerHttp404Error
 
 log = logging.getLogger(__name__)
 
diff --git a/gns3server/compute/dynamips/__init__.py b/gns3server/compute/dynamips/__init__.py
index cbedaa6ad..ec2cdacc1 100644
--- a/gns3server/compute/dynamips/__init__.py
+++ b/gns3server/compute/dynamips/__init__.py
@@ -18,49 +18,38 @@
 Dynamips server module.
 """
 
-import sys
+import asyncio
+import glob
+import logging
 import os
+import re
 import shutil
 import socket
-import time
-import asyncio
-import tempfile
-import logging
 import subprocess
-import glob
-import re
+import sys
+import tempfile
+import time
 
 log = logging.getLogger(__name__)
 
-from gns3server.utils.interfaces import is_interface_up
-from gns3server.utils.asyncio import wait_run_in_executor, subprocess_check_output
-from gns3server.utils import parse_version
 from uuid import uuid4
+
+from gns3server.utils import parse_version
+from gns3server.utils.asyncio import subprocess_check_output, wait_run_in_executor
+from gns3server.utils.interfaces import is_interface_up
+
 from ..base_manager import BaseManager
 from ..port_manager import PortManager
-from .dynamips_error import DynamipsError
-from .hypervisor import Hypervisor
-from .nodes.router import Router
-from .dynamips_factory import DynamipsFactory
-
-# NIOs
-from .nios.nio_udp import NIOUDP
-from .nios.nio_unix import NIOUNIX
-from .nios.nio_vde import NIOVDE
-from .nios.nio_tap import NIOTAP
-from .nios.nio_generic_ethernet import NIOGenericEthernet
-from .nios.nio_linux_ethernet import NIOLinuxEthernet
-from .nios.nio_null import NIONull
 
 # Adapters
 from .adapters.c7200_io_2fe import C7200_IO_2FE
 from .adapters.c7200_io_fe import C7200_IO_FE
 from .adapters.c7200_io_ge_e import C7200_IO_GE_E
-from .adapters.nm_16esw import NM_16ESW
 from .adapters.nm_1e import NM_1E
 from .adapters.nm_1fe_tx import NM_1FE_TX
 from .adapters.nm_4e import NM_4E
 from .adapters.nm_4t import NM_4T
+from .adapters.nm_16esw import NM_16ESW
 from .adapters.pa_2fe_tx import PA_2FE_TX
 from .adapters.pa_4e import PA_4E
 from .adapters.pa_4t import PA_4T
@@ -73,7 +62,19 @@ from .adapters.pa_pos_oc3 import PA_POS_OC3
 from .adapters.wic_1enet import WIC_1ENET
 from .adapters.wic_1t import WIC_1T
 from .adapters.wic_2t import WIC_2T
+from .dynamips_error import DynamipsError
+from .dynamips_factory import DynamipsFactory
+from .hypervisor import Hypervisor
+from .nios.nio_generic_ethernet import NIOGenericEthernet
+from .nios.nio_linux_ethernet import NIOLinuxEthernet
+from .nios.nio_null import NIONull
+from .nios.nio_tap import NIOTAP
 
+# NIOs
+from .nios.nio_udp import NIOUDP
+from .nios.nio_unix import NIOUNIX
+from .nios.nio_vde import NIOVDE
+from .nodes.router import Router
 
 ADAPTER_MATRIX = {
     "C7200-IO-2FE": C7200_IO_2FE,
diff --git a/gns3server/compute/dynamips/dynamips_factory.py b/gns3server/compute/dynamips/dynamips_factory.py
index cbafc4934..4febe9b7d 100644
--- a/gns3server/compute/dynamips/dynamips_factory.py
+++ b/gns3server/compute/dynamips/dynamips_factory.py
@@ -15,7 +15,10 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
+import logging
+
 from .dynamips_error import DynamipsError
+from .nodes.atm_switch import ATMSwitch
 from .nodes.c1700 import C1700
 from .nodes.c2600 import C2600
 from .nodes.c2691 import C2691
@@ -23,13 +26,10 @@ from .nodes.c3600 import C3600
 from .nodes.c3725 import C3725
 from .nodes.c3745 import C3745
 from .nodes.c7200 import C7200
-from .nodes.atm_switch import ATMSwitch
-from .nodes.ethernet_switch import EthernetSwitch
 from .nodes.ethernet_hub import EthernetHub
+from .nodes.ethernet_switch import EthernetSwitch
 from .nodes.frame_relay_switch import FrameRelaySwitch
 
-import logging
-
 log = logging.getLogger(__name__)
 
 PLATFORMS = {
diff --git a/gns3server/compute/dynamips/dynamips_hypervisor.py b/gns3server/compute/dynamips/dynamips_hypervisor.py
index 514e75360..b2c1f7640 100644
--- a/gns3server/compute/dynamips/dynamips_hypervisor.py
+++ b/gns3server/compute/dynamips/dynamips_hypervisor.py
@@ -19,10 +19,10 @@ Interface for Dynamips hypervisor management module ("hypervisor")
 http://github.com/GNS3/dynamips/blob/master/README.hypervisor#L46
 """
 
+import asyncio
+import logging
 import re
 import time
-import logging
-import asyncio
 
 from .dynamips_error import DynamipsError
 
diff --git a/gns3server/compute/dynamips/hypervisor.py b/gns3server/compute/dynamips/hypervisor.py
index 403c38c7e..c528c3e6f 100644
--- a/gns3server/compute/dynamips/hypervisor.py
+++ b/gns3server/compute/dynamips/hypervisor.py
@@ -18,16 +18,16 @@
 Represents a Dynamips hypervisor and starts/stops the associated Dynamips process.
 """
 
-import sys
+import asyncio
+import logging
 import os
 import subprocess
-import asyncio
+import sys
 
 from gns3server.utils.asyncio import wait_for_process_termination
-from .dynamips_hypervisor import DynamipsHypervisor
-from .dynamips_error import DynamipsError
 
-import logging
+from .dynamips_error import DynamipsError
+from .dynamips_hypervisor import DynamipsHypervisor
 
 log = logging.getLogger(__name__)
 
diff --git a/gns3server/compute/dynamips/nios/nio.py b/gns3server/compute/dynamips/nios/nio.py
index 512a10699..3b4c74969 100644
--- a/gns3server/compute/dynamips/nios/nio.py
+++ b/gns3server/compute/dynamips/nios/nio.py
@@ -20,10 +20,10 @@ http://github.com/GNS3/dynamips/blob/master/README.hypervisor#L451
 """
 
 import asyncio
-from ..dynamips_error import DynamipsError
-
 import logging
 
+from ..dynamips_error import DynamipsError
+
 log = logging.getLogger(__name__)
 
 
diff --git a/gns3server/compute/dynamips/nios/nio_generic_ethernet.py b/gns3server/compute/dynamips/nios/nio_generic_ethernet.py
index 1407c6694..679c8bc60 100644
--- a/gns3server/compute/dynamips/nios/nio_generic_ethernet.py
+++ b/gns3server/compute/dynamips/nios/nio_generic_ethernet.py
@@ -19,10 +19,10 @@ Interface for generic Ethernet NIOs (PCAP library).
 """
 
 import asyncio
-import uuid
-from .nio import NIO
-
 import logging
+import uuid
+
+from .nio import NIO
 
 log = logging.getLogger(__name__)
 
diff --git a/gns3server/compute/dynamips/nios/nio_linux_ethernet.py b/gns3server/compute/dynamips/nios/nio_linux_ethernet.py
index c11039a5c..b85eb4b81 100644
--- a/gns3server/compute/dynamips/nios/nio_linux_ethernet.py
+++ b/gns3server/compute/dynamips/nios/nio_linux_ethernet.py
@@ -19,10 +19,10 @@ Interface for Linux Ethernet NIOs (Linux only).
 """
 
 import asyncio
-import uuid
-from .nio import NIO
-
 import logging
+import uuid
+
+from .nio import NIO
 
 log = logging.getLogger(__name__)
 
diff --git a/gns3server/compute/dynamips/nios/nio_null.py b/gns3server/compute/dynamips/nios/nio_null.py
index 1f56a12e8..d47170329 100644
--- a/gns3server/compute/dynamips/nios/nio_null.py
+++ b/gns3server/compute/dynamips/nios/nio_null.py
@@ -19,10 +19,10 @@ Interface for dummy NIOs (mostly for tests).
 """
 
 import asyncio
-import uuid
-from .nio import NIO
-
 import logging
+import uuid
+
+from .nio import NIO
 
 log = logging.getLogger(__name__)
 
diff --git a/gns3server/compute/dynamips/nios/nio_tap.py b/gns3server/compute/dynamips/nios/nio_tap.py
index acd3a864e..47ac30494 100644
--- a/gns3server/compute/dynamips/nios/nio_tap.py
+++ b/gns3server/compute/dynamips/nios/nio_tap.py
@@ -19,10 +19,10 @@ Interface for TAP NIOs (UNIX based OSes only).
 """
 
 import asyncio
-import uuid
-from .nio import NIO
-
 import logging
+import uuid
+
+from .nio import NIO
 
 log = logging.getLogger(__name__)
 
diff --git a/gns3server/compute/dynamips/nios/nio_udp.py b/gns3server/compute/dynamips/nios/nio_udp.py
index c811858d9..4419bf71f 100644
--- a/gns3server/compute/dynamips/nios/nio_udp.py
+++ b/gns3server/compute/dynamips/nios/nio_udp.py
@@ -19,14 +19,13 @@ Interface for UDP NIOs.
 """
 
 import asyncio
+import logging
 import uuid
 
 from gns3server.compute.nios import nio_udp
+
 from .nio import NIO
 
-
-import logging
-
 log = logging.getLogger(__name__)
 
 
diff --git a/gns3server/compute/dynamips/nios/nio_unix.py b/gns3server/compute/dynamips/nios/nio_unix.py
index bab9ee06e..37fbc0858 100644
--- a/gns3server/compute/dynamips/nios/nio_unix.py
+++ b/gns3server/compute/dynamips/nios/nio_unix.py
@@ -19,10 +19,10 @@ Interface for UNIX NIOs (Unix based OSes only).
 """
 
 import asyncio
-import uuid
-from .nio import NIO
-
 import logging
+import uuid
+
+from .nio import NIO
 
 log = logging.getLogger(__name__)
 
diff --git a/gns3server/compute/dynamips/nios/nio_vde.py b/gns3server/compute/dynamips/nios/nio_vde.py
index 7218179ce..c44787a46 100644
--- a/gns3server/compute/dynamips/nios/nio_vde.py
+++ b/gns3server/compute/dynamips/nios/nio_vde.py
@@ -19,10 +19,10 @@ Interface for VDE (Virtual Distributed Ethernet) NIOs (Unix based OSes only).
 """
 
 import asyncio
-import uuid
-from .nio import NIO
-
 import logging
+import uuid
+
+from .nio import NIO
 
 log = logging.getLogger(__name__)
 
diff --git a/gns3server/compute/dynamips/nodes/atm_switch.py b/gns3server/compute/dynamips/nodes/atm_switch.py
index 38e9d4ecb..0c4591399 100644
--- a/gns3server/compute/dynamips/nodes/atm_switch.py
+++ b/gns3server/compute/dynamips/nodes/atm_switch.py
@@ -20,13 +20,12 @@ http://github.com/GNS3/dynamips/blob/master/README.hypervisor#L593
 """
 
 import asyncio
+import logging
 import re
 
-from .device import Device
-from ..nios.nio_udp import NIOUDP
 from ..dynamips_error import DynamipsError
-
-import logging
+from ..nios.nio_udp import NIOUDP
+from .device import Device
 
 log = logging.getLogger(__name__)
 
diff --git a/gns3server/compute/dynamips/nodes/bridge.py b/gns3server/compute/dynamips/nodes/bridge.py
index 04c1651f8..57b74e5e2 100644
--- a/gns3server/compute/dynamips/nodes/bridge.py
+++ b/gns3server/compute/dynamips/nodes/bridge.py
@@ -20,6 +20,7 @@ http://github.com/GNS3/dynamips/blob/master/README.hypervisor#L538
 """
 
 import asyncio
+
 from .device import Device
 
 
diff --git a/gns3server/compute/dynamips/nodes/c1700.py b/gns3server/compute/dynamips/nodes/c1700.py
index b2d24b25b..7ead2f8df 100644
--- a/gns3server/compute/dynamips/nodes/c1700.py
+++ b/gns3server/compute/dynamips/nodes/c1700.py
@@ -20,11 +20,11 @@ http://github.com/GNS3/dynamips/blob/master/README.hypervisor#L428
 """
 
 import asyncio
-from .router import Router
+import logging
+
 from ..adapters.c1700_mb_1fe import C1700_MB_1FE
 from ..adapters.c1700_mb_wic1 import C1700_MB_WIC1
-
-import logging
+from .router import Router
 
 log = logging.getLogger(__name__)
 
diff --git a/gns3server/compute/dynamips/nodes/c2600.py b/gns3server/compute/dynamips/nodes/c2600.py
index 774d67e54..89159f57d 100644
--- a/gns3server/compute/dynamips/nodes/c2600.py
+++ b/gns3server/compute/dynamips/nodes/c2600.py
@@ -20,14 +20,14 @@ http://github.com/GNS3/dynamips/blob/master/README.hypervisor#L404
 """
 
 import asyncio
-from .router import Router
-from ..adapters.c2600_mb_1e import C2600_MB_1E
-from ..adapters.c2600_mb_2e import C2600_MB_2E
-from ..adapters.c2600_mb_1fe import C2600_MB_1FE
-from ..adapters.c2600_mb_2fe import C2600_MB_2FE
-
 import logging
 
+from ..adapters.c2600_mb_1e import C2600_MB_1E
+from ..adapters.c2600_mb_1fe import C2600_MB_1FE
+from ..adapters.c2600_mb_2e import C2600_MB_2E
+from ..adapters.c2600_mb_2fe import C2600_MB_2FE
+from .router import Router
+
 log = logging.getLogger(__name__)
 
 
diff --git a/gns3server/compute/dynamips/nodes/c2691.py b/gns3server/compute/dynamips/nodes/c2691.py
index c28d1c161..94a6bc499 100644
--- a/gns3server/compute/dynamips/nodes/c2691.py
+++ b/gns3server/compute/dynamips/nodes/c2691.py
@@ -20,11 +20,11 @@ http://github.com/GNS3/dynamips/blob/master/README.hypervisor#L387
 """
 
 import asyncio
-from .router import Router
+import logging
+
 from ..adapters.gt96100_fe import GT96100_FE
 from ..dynamips_error import DynamipsError
-
-import logging
+from .router import Router
 
 log = logging.getLogger(__name__)
 
diff --git a/gns3server/compute/dynamips/nodes/c3600.py b/gns3server/compute/dynamips/nodes/c3600.py
index d4d5f7235..87f4bc55f 100644
--- a/gns3server/compute/dynamips/nodes/c3600.py
+++ b/gns3server/compute/dynamips/nodes/c3600.py
@@ -20,11 +20,11 @@ http://github.com/GNS3/dynamips/blob/master/README.hypervisor#L366
 """
 
 import asyncio
-from .router import Router
-from ..adapters.leopard_2fe import Leopard_2FE
-
 import logging
 
+from ..adapters.leopard_2fe import Leopard_2FE
+from .router import Router
+
 log = logging.getLogger(__name__)
 
 
diff --git a/gns3server/compute/dynamips/nodes/c3725.py b/gns3server/compute/dynamips/nodes/c3725.py
index 3f9c22e1d..73f73831e 100644
--- a/gns3server/compute/dynamips/nodes/c3725.py
+++ b/gns3server/compute/dynamips/nodes/c3725.py
@@ -20,11 +20,11 @@ http://github.com/GNS3/dynamips/blob/master/README.hypervisor#L346
 """
 
 import asyncio
-from .router import Router
+import logging
+
 from ..adapters.gt96100_fe import GT96100_FE
 from ..dynamips_error import DynamipsError
-
-import logging
+from .router import Router
 
 log = logging.getLogger(__name__)
 
diff --git a/gns3server/compute/dynamips/nodes/c3745.py b/gns3server/compute/dynamips/nodes/c3745.py
index 36eac087d..74ed2d1b7 100644
--- a/gns3server/compute/dynamips/nodes/c3745.py
+++ b/gns3server/compute/dynamips/nodes/c3745.py
@@ -20,11 +20,11 @@ http://github.com/GNS3/dynamips/blob/master/README.hypervisor#L326
 """
 
 import asyncio
-from .router import Router
+import logging
+
 from ..adapters.gt96100_fe import GT96100_FE
 from ..dynamips_error import DynamipsError
-
-import logging
+from .router import Router
 
 log = logging.getLogger(__name__)
 
diff --git a/gns3server/compute/dynamips/nodes/c7200.py b/gns3server/compute/dynamips/nodes/c7200.py
index 98541b87f..3cf37b44c 100644
--- a/gns3server/compute/dynamips/nodes/c7200.py
+++ b/gns3server/compute/dynamips/nodes/c7200.py
@@ -20,13 +20,12 @@ http://github.com/GNS3/dynamips/blob/master/README.hypervisor#L294
 """
 
 import asyncio
+import logging
 
-from .router import Router
 from ..adapters.c7200_io_fe import C7200_IO_FE
 from ..adapters.c7200_io_ge_e import C7200_IO_GE_E
 from ..dynamips_error import DynamipsError
-
-import logging
+from .router import Router
 
 log = logging.getLogger(__name__)
 
diff --git a/gns3server/compute/dynamips/nodes/ethernet_hub.py b/gns3server/compute/dynamips/nodes/ethernet_hub.py
index e8ea75062..e093fff2e 100644
--- a/gns3server/compute/dynamips/nodes/ethernet_hub.py
+++ b/gns3server/compute/dynamips/nodes/ethernet_hub.py
@@ -18,13 +18,13 @@
 Hub object that uses the Bridge interface to create a hub with ports.
 """
 
-from .bridge import Bridge
-from ..nios.nio_udp import NIOUDP
-from ..dynamips_error import DynamipsError
-from ...error import NodeError
-
 import logging
 
+from ...error import NodeError
+from ..dynamips_error import DynamipsError
+from ..nios.nio_udp import NIOUDP
+from .bridge import Bridge
+
 log = logging.getLogger(__name__)
 
 
diff --git a/gns3server/compute/dynamips/nodes/ethernet_switch.py b/gns3server/compute/dynamips/nodes/ethernet_switch.py
index df3adf349..78af98783 100644
--- a/gns3server/compute/dynamips/nodes/ethernet_switch.py
+++ b/gns3server/compute/dynamips/nodes/ethernet_switch.py
@@ -20,17 +20,16 @@ http://github.com/GNS3/dynamips/blob/master/README.hypervisor#L558
 """
 
 import asyncio
+import logging
+
 from gns3server.utils import parse_version
 
-# from gns3server.utils.asyncio.embed_shell import EmbedShell, create_telnet_shell
-
-
-from .device import Device
-from ..nios.nio_udp import NIOUDP
-from ..dynamips_error import DynamipsError
 from ...error import NodeError
+from ..dynamips_error import DynamipsError
+from ..nios.nio_udp import NIOUDP
 
-import logging
+# from gns3server.utils.asyncio.embed_shell import EmbedShell, create_telnet_shell
+from .device import Device
 
 log = logging.getLogger(__name__)
 
diff --git a/gns3server/compute/dynamips/nodes/frame_relay_switch.py b/gns3server/compute/dynamips/nodes/frame_relay_switch.py
index 5839e1cdf..5bed4fa17 100644
--- a/gns3server/compute/dynamips/nodes/frame_relay_switch.py
+++ b/gns3server/compute/dynamips/nodes/frame_relay_switch.py
@@ -20,13 +20,12 @@ http://github.com/GNS3/dynamips/blob/master/README.hypervisor#L642
 """
 
 import asyncio
-
-from .device import Device
-from ..nios.nio_udp import NIOUDP
-from ..dynamips_error import DynamipsError
-
 import logging
 
+from ..dynamips_error import DynamipsError
+from ..nios.nio_udp import NIOUDP
+from .device import Device
+
 log = logging.getLogger(__name__)
 
 
diff --git a/gns3server/compute/dynamips/nodes/router.py b/gns3server/compute/dynamips/nodes/router.py
index 8aabf6ddd..809fab8d9 100644
--- a/gns3server/compute/dynamips/nodes/router.py
+++ b/gns3server/compute/dynamips/nodes/router.py
@@ -20,26 +20,26 @@ http://github.com/GNS3/dynamips/blob/master/README.hypervisor#L77
 """
 
 import asyncio
-import time
-import sys
+import base64
+import binascii
+import glob
+import logging
 import os
 import re
-import glob
-import base64
 import shutil
-import binascii
-import logging
+import sys
+import time
 
 log = logging.getLogger(__name__)
 
-from ...base_node import BaseNode
-from ..dynamips_error import DynamipsError
-
+from gns3server.utils.asyncio import monitor_process, wait_run_in_executor
 from gns3server.utils.file_watcher import FileWatcher
-from gns3server.utils.asyncio import wait_run_in_executor, monitor_process
 from gns3server.utils.hostname import is_ios_hostname_valid
 from gns3server.utils.images import md5sum
 
+from ...base_node import BaseNode
+from ..dynamips_error import DynamipsError
+
 
 class Router(BaseNode):
     """
diff --git a/gns3server/compute/iou/__init__.py b/gns3server/compute/iou/__init__.py
index afe2766a2..b89381f06 100644
--- a/gns3server/compute/iou/__init__.py
+++ b/gns3server/compute/iou/__init__.py
@@ -18,15 +18,14 @@
 IOU server module.
 """
 
-import os
 import asyncio
+import logging
+import os
 
 from ..base_manager import BaseManager
 from .iou_error import IOUError
 from .iou_vm import IOUVM
 
-import logging
-
 log = logging.getLogger(__name__)
 
 
diff --git a/gns3server/compute/iou/iou_vm.py b/gns3server/compute/iou/iou_vm.py
index b0f99a4c2..531f719a2 100644
--- a/gns3server/compute/iou/iou_vm.py
+++ b/gns3server/compute/iou/iou_vm.py
@@ -19,37 +19,37 @@ IOU VM management (creates command line, processes, files etc.) in
 order to run an IOU VM.
 """
 
-import os
-import socket
-import re
 import asyncio
-import subprocess
-import shutil
-import configparser
-import struct
-import hashlib
-import glob
 import binascii
+import configparser
 import functools
+import glob
+import hashlib
+import logging
+import os
+import re
+import shutil
+import socket
+import struct
+import subprocess
+import sys
 
-from .iou_error import IOUError
-from ..adapters.ethernet_adapter import EthernetAdapter
-from ..adapters.serial_adapter import SerialAdapter
-from ..nios.nio_udp import NIOUDP
-from ..base_node import BaseNode
-from .utils.iou_import import nvram_import
-from .utils.iou_export import nvram_export
-from gns3server.compute.ubridge.ubridge_error import UbridgeError
-from gns3server.utils.file_watcher import FileWatcher
-from gns3server.utils.asyncio.ssh_server import AsyncioSSHServer
-from gns3server.utils.asyncio.telnet_server import AsyncioTelnetServer
-from gns3server.utils.hostname import is_ios_hostname_valid
-from gns3server.utils.asyncio import locking
 import gns3server.utils.asyncio
 import gns3server.utils.images
+from gns3server.compute.ubridge.ubridge_error import UbridgeError
+from gns3server.utils.asyncio import locking
+from gns3server.utils.asyncio.ssh_server import AsyncioSSHServer
+from gns3server.utils.asyncio.telnet_server import AsyncioTelnetServer
+from gns3server.utils.file_watcher import FileWatcher
+from gns3server.utils.hostname import is_ios_hostname_valid
 
-import logging
-import sys
+from ..adapters.ethernet_adapter import EthernetAdapter
+from ..adapters.serial_adapter import SerialAdapter
+from ..base_node import BaseNode
+from ..nios.nio_udp import NIOUDP
+from .iou_error import IOUError
+from .utils.iou_export import nvram_export
+from .utils.iou_import import nvram_import
 
 log = logging.getLogger(__name__)
 
diff --git a/gns3server/compute/qemu/__init__.py b/gns3server/compute/qemu/__init__.py
index 5a01be047..fc4b3d062 100644
--- a/gns3server/compute/qemu/__init__.py
+++ b/gns3server/compute/qemu/__init__.py
@@ -19,25 +19,24 @@ Qemu server module.
 """
 
 import asyncio
+import logging
 import os
 import platform
-import shutil
-import shlex
-import sys
 import re
+import shlex
+import shutil
 import subprocess
+import sys
 
 from ...utils.asyncio import subprocess_check_output
 from ...utils.get_resource import get_resource
 from ..base_manager import BaseManager
-from ..error import NodeError, ImageMissingError
+from ..error import ImageMissingError, NodeError
 from .qemu_error import QemuError
 from .qemu_vm import QemuVM
 from .utils.guest_cid import get_next_guest_cid
 from .utils.ziputils import unpack_zip
 
-import logging
-
 log = logging.getLogger(__name__)
 
 
diff --git a/gns3server/compute/qemu/qemu_vm.py b/gns3server/compute/qemu/qemu_vm.py
index 51b650839..d04b6ed82 100644
--- a/gns3server/compute/qemu/qemu_vm.py
+++ b/gns3server/compute/qemu/qemu_vm.py
@@ -19,40 +19,40 @@ QEMU VM management (creates command line, processes, files etc.) in
 order to run a QEMU VM.
 """
 
-import sys
+import asyncio
+import json
+import logging
+import math
 import os
 import re
-import math
-import shutil
-import struct
-import asyncio
-import socket
-import gns3server
-import subprocess
-import time
-import json
 import shlex
+import shutil
+import socket
+import struct
+import subprocess
+import sys
+import time
+from pathlib import Path
+
 import psutil
 
-from pathlib import Path
+import gns3server
+from gns3server.schemas.compute.qemu_nodes import Qemu, QemuPlatform
 from gns3server.utils import parse_version
-from gns3server.utils.asyncio import subprocess_check_output, cancellable_wait_run_in_executor
+from gns3server.utils.asyncio import cancellable_wait_run_in_executor, subprocess_check_output
+
+from ...utils import int_to_macaddress, is_ipv6_enabled, macaddress_to_int
+from ...utils.asyncio import monitor_process
+from ...utils.hostname import is_rfc1123_hostname_valid
+from ...utils.images import md5sum
+from ..adapters.ethernet_adapter import EthernetAdapter
+from ..base_node import BaseNode
+from ..error import ImageMissingError, NodeError
+from ..nios.nio_tap import NIOTAP
+from ..nios.nio_udp import NIOUDP
 from .qemu_error import QemuError
 from .utils.qcow2 import Qcow2, Qcow2Error
 from .utils.ziputils import pack_zip, unpack_zip
-from ..adapters.ethernet_adapter import EthernetAdapter
-from ..error import NodeError, ImageMissingError
-from ..nios.nio_udp import NIOUDP
-from ..nios.nio_tap import NIOTAP
-from ..base_node import BaseNode
-from ...utils.asyncio import monitor_process
-from ...utils.images import md5sum
-from ...utils import macaddress_to_int, int_to_macaddress, is_ipv6_enabled
-from ...utils.hostname import is_rfc1123_hostname_valid
-
-from gns3server.schemas.compute.qemu_nodes import Qemu, QemuPlatform
-
-import logging
 
 log = logging.getLogger(__name__)
 
diff --git a/gns3server/compute/qemu/utils/guest_cid.py b/gns3server/compute/qemu/utils/guest_cid.py
index b8b34b1d0..c61b46af1 100644
--- a/gns3server/compute/qemu/utils/guest_cid.py
+++ b/gns3server/compute/qemu/utils/guest_cid.py
@@ -14,10 +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/>.
 
-from ..qemu_error import QemuError
-
 import logging
 
+from ..qemu_error import QemuError
+
 log = logging.getLogger(__name__)
 
 
diff --git a/gns3server/compute/qemu/utils/qcow2.py b/gns3server/compute/qemu/utils/qcow2.py
index 9ea5fb40a..3b50c9fd7 100644
--- a/gns3server/compute/qemu/utils/qcow2.py
+++ b/gns3server/compute/qemu/utils/qcow2.py
@@ -15,9 +15,9 @@
 # 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 asyncio
 import json
 import os
-import asyncio
 import struct
 
 
diff --git a/gns3server/compute/qemu/utils/ziputils.py b/gns3server/compute/qemu/utils/ziputils.py
index 165e5e7ce..4e229e0ea 100644
--- a/gns3server/compute/qemu/utils/ziputils.py
+++ b/gns3server/compute/qemu/utils/ziputils.py
@@ -16,8 +16,8 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
-import time
 import shutil
+import time
 import zipfile