The command loaded the zone with Zone.objects.get(...) and then tested
the result for truthiness:
nb_zone = Zone.objects.get(...)
if nb_zone:
...export...
else:
self.stderr.write('Zone not found in Netbox. Aborting')
Zone.objects.get() either returns a model instance (always truthy) or
raises Zone.DoesNotExist. It never returns a falsy value, so the else
branch was unreachable dead code. A missing zone is already handled
correctly: DoesNotExist is a subclass of Exception, which the
surrounding try/except catches and converts into a CommandError.
Drop the dead if/else and call export_bind_zone_file directly.
sven
8b5ecce44d