new_contents: 
  from net_system.models import NetworkDevice
  import django
  
  def main():
      django.setup()
  
      pynet_rtr1 = NetworkDevice(
          device_name='pynet-rtr1',
          device_type='cisco_ios',
          ip_address='184.105.247.70',
          port=22,
      )
      pynet_rtr1.save()
  
      pynet_rtr2 = NetworkDevice.objects.get_or_create(
          device_name='pynet-rtr2',
          device_type='cisco_ios',
          ip_address='184.105.247.71',
          port=22,
      )
      print pynet_rtr2
  
      pynet_sw1 = NetworkDevice.objects.get_or_create(
          device_name='pynet-sw1',
          device_type='arista_eos',
          ip_address='184.105.247.72',
          port=22,
      )
      print pynet_sw1
  
      pynet_sw2 = NetworkDevice.objects.get_or_create(
          device_name='pynet-sw2',
          device_type='arista_eos',
          ip_address='184.105.247.73',
          port=22,
      )
      print pynet_sw2
  
      pynet_sw3 = NetworkDevice.objects.get_or_create(
          device_name='pynet-sw3',
          device_type='arista_eos',
          ip_address='184.105.247.74',
          port=22,
      )
      print pynet_sw3
  
      pynet_sw4 = NetworkDevice.objects.get_or_create(
          device_name='pynet-sw4',
          device_type='arista_eos',
          ip_address='184.105.247.75',
          port=22,
      )
      print pynet_sw4
  
      juniper_srx = NetworkDevice.objects.get_or_create(
          device_name='juniper-srx',
          device_type='juniper',
          ip_address='184.105.247.76',
          port=22,
      )
      print juniper_srx
  
  #
  # New Devices inserted here
  #
  
      pynet_rtr007 = NetworkDevice(
          device_name='pynet-rtr007',
          device_type='cisco_ios',
          ip_address='10.20.30.40',
          port=22,
      )
      pynet_rtr007.save()
  
      pynet_sw007 = NetworkDevice.objects.get_or_create(
          device_name='pynet-sw007',
          device_type='arista_eos',
          ip_address='11.12.13.14',
          port=22,
      )
      print pynet_sw007
  
  #
  # New Devices inserted here
  #
  
  if __name__ == "__main__":
      main()
  
subject: add load_devices.py