from dcim.models import Region
from ruamel.yaml import YAML

with open('/opt/netbox/initializers/regions.yml', 'r') as stream:
  yaml=YAML(typ='safe')
  regions = yaml.load(stream)

  optional_assocs = {
    'parent': (Region, 'name')
  }

  if regions is not None:
    for params in regions:

      for assoc, details in optional_assocs.items():
        if assoc in params:
          model, field = details
          query = dict(field=params.pop(assoc))

          params[assoc] = model.objects.get(**query)

      region, created = Region.objects.get_or_create(**params)

      if created:
        print("Created region", region.name)