Standalone script to create all the missing device components which exist in DeviceType template but not in Device instances

fix-device-ports.py

import django
import os
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'netbox.settings')
django.setup()

from dcim.models import Device, ConsolePort, ConsoleServerPort, PowerPort, PowerOutlet, Interface, RearPort, FrontPort, DeviceBay

for device in Device.objects.all():
            # Based on Device.save()
            ConsolePort.objects.bulk_create(
                [ConsolePort(device=device, name=template.name) for template in
                 device.device_type.consoleport_templates.all()
                 if template.name not in {i.name for i in device.consoleports.all()}]
            )
            ConsoleServerPort.objects.bulk_create(
                [ConsoleServerPort(device=device, name=template.name) for template in
                 device.device_type.consoleserverport_templates.all()
                 if template.name not in {i.name for i in device.consoleserverports.all()}]
            )
            PowerPort.objects.bulk_create(
                [PowerPort(device=device, name=template.name) for template in
                 device.device_type.powerport_templates.all()
                 if template.name not in {i.name for i in device.powerports.all()}]
            )
            PowerOutlet.objects.bulk_create(
                [PowerOutlet(device=device, name=template.name) for template in
                 device.device_type.poweroutlet_templates.all()
                 if template.name not in {i.name for i in device.poweroutlets.all()}]
            )
            Interface.objects.bulk_create(
                [Interface(device=device, name=template.name, form_factor=template.form_factor,
                           mgmt_only=template.mgmt_only) for template in device.device_type.interface_templates.all()
                           if template.name not in {i.name for i in device.interfaces.all()}]
            )
            RearPort.objects.bulk_create([
                RearPort(
                    device=device,
                    name=template.name,
                    type=template.type,
                    positions=template.positions
                ) for template in device.device_type.rearport_templates.all()
                  if template.name not in {i.name for i in device.rearports.all()}
            ])
            FrontPort.objects.bulk_create([
                FrontPort(
                    device=device,
                    name=template.name,
                    type=template.type,
                    rear_port=RearPort.objects.get(device=device, name=template.rear_port.name),
                    rear_port_position=template.rear_port_position,
                ) for template in device.device_type.frontport_templates.all()
                  if template.name not in {i.name for i in device.frontports.all()}
            ])
            DeviceBay.objects.bulk_create(
                [DeviceBay(device=device, name=template.name) for template in
                 device.device_type.device_bay_templates.all()
                 if template.name not in {i.name for i in device.device_bays.all()}]
            )