in mwaairflow/nested_stacks/environment.py [0:0]
def get_subnet_ids(cls, vpc, subnet_ids_list):
if not subnet_ids_list:
subnet_ids = []
subnets = vpc.select_subnets(subnet_type=ec2.SubnetType.PRIVATE).subnets
first_subnet = subnets[0]
subnet_ids.append(first_subnet.subnet_id)
for s in subnets:
if s.availability_zone != first_subnet.availability_zone:
subnet_ids.append(s.subnet_id)
break
else:
subnet_ids = list(subnet_ids_list.split(","))
return subnet_ids