Normally with Python rules, you have to have some backups for Netpicker to test your assertion against.
First, let’s run a test and see if we have the word “ospf” in the configuration or not without getting a backup:
The rule fails even though we have one OSPF process configured on the device:
For this to work, we either have to trigger a device backup first, or run a real-time command using device.cli():
