get_vlans_with_firewalls.py

import SoftLayer.API
from pprint import pprint as pp

apiUsername = ''
apiKey = ''

client = SoftLayer.Client(
    username=apiUsername,
    api_key=apiKey,
)

object_mask = "mask.firewallInterfaces.firewallContextAccessControlLists"

vlans = client['Account'].getNetworkVlans(mask=object_mask)
vlans_with_acls = []

for vlan in vlans:
    if not vlan['firewallInterfaces']:
        continue
    else:
        vlans_with_acls.append(vlan)

pp(vlans_with_acls)