Creating cable labels using API and pynetbox

[nomad-cyanide]

Hi

I am just trying to make a little script, that takes the interfaces of a device that has cables defined and print the termination-points. I need this information to piece together the label, that we are going to print out and put on the cable itself.
I have gotten to point of fetching the cable from Netbox, but I cannot figure out how to print the tuple information about just the a and b termination points.

device_name = TESTSRV
nb_device = nb.dcim.devices.get(name=device_name)
if not nb_device:
print ("Device not found in netbox")
exit()
nb_device_name = str(nb_device.name)
nb_device_interfaces = nb.dcim.interfaces.filter(device=nb_device_name)
for nb_interface in nb_device_interfaces:
nb_interface_cable = nb_interface.cable
if nb_interface_cable == None:
continue
else:
print("interface_cable id",nb_interface_cable.id)
nb_cable = nb.dcim.cables.get(nb_interface_cable.id)
for output in nb_cable:
print (output)
print("interface cable",nb_cable)

Output:

device_name TESTSRV
interface_cable id 2118
('id', 2118)
('url', 'https://netbox.test/api/dcim/cables/2118/')
('display', '#2118')
('type', '')
('a_terminations', [{'object_type': 'circuits.circuittermination', 'object_id': 165, 'object': {'id': 165, 'url': 'https://netbox.test/api/circuits/circuit-terminations/165/', 'display': 'Termination Z: TEST-SITE', 'circuit': {'id': 102, 'url': 'https://netbox.test/api/circuits/circuits/102/', 'display': 'TEST-CIRCUIT-1', 'cid': 'TEST-CIRCUIT-1'}, 'term_side': 'Z', 'cable': 2118, '_occupied': True}}])
('b_terminations', [{'object_type': 'dcim.interface', 'object_id': 58965, 'object': {'id': 58965, 'url': 'https://netbox.test/api/dcim/interfaces/58965/', 'display': 'et-0/0/0', 'device': {'id': 1517, 'url': 'https://netbox.test/api/dcim/devices/1517/', 'display': 'TESTSRV', 'name': 'TESTSRV'}, 'name': 'et-0/0/0', 'cable': 2118, '_occupied': True}}])
('status', {'value': 'connected', 'label': 'Connected'})
('tenant', {'id': 764, 'url': 'https://netbox.test/api/tenancy/tenants/764/', 'display': 'TEST-TENANT', 'name': 'TEST-TENANT', 'slug': 'test-tenant'})
('label', '')
('color', '')
('length', None)
('length_unit', None)
('tags', [])
('custom_fields', {})
('created', '2023-01-11T14:01:41.398805+01:00')
('last_updated', '2023-01-11T14:09:17.594893+01:00')
interface cable Cable #2118

If I try something like printing nb_cable.a_terminations I just get empty output.
I need the a and b terminations a list or dict, so I can pick and choose from the contents. Any ideas?

[candlerb]

You need to upgrade pynetbox.

I can reproduce your problem here with pynetbox 6.1.2:

>>> c = nb.dcim.cables.get(66)
>>> c
Cable #66
>>> c.a_terminations
[]

But after upgrading to pynetbox 7.0.0:

>>> c = nb.dcim.cables.get(66)
>>> c
enp3s0 <> ether3
>>> c.a_terminations
[enp3s0]

[nomad-cyanide]

Thanks. That did the trick.