geenrator.py

def subnet_generator(subnets, vpc):
    vpc_network = vpc.cidr_block.apply(ip_network)
    nxt = str(vpc_network.network_address)
    print(nxt) # prints `<pulumi.output.Output object at 0x108b93730>`

    def valid_cidr(s1, s2):
        if s1.network_address == s2.network_address:
            return True
        elif s1 > s2:
            return True
        else:
            return False

    for subnet in subnets:
        count = subnet.get('az_count')
        availability_zones = getn_availability_zones(count)

        for i in range(count):
            availability_zone = availability_zones[i]
            mask = subnet.get('cidr_mask')
            subnet_cidr = next(sn for sn in vpc_network.subnets(new_prefix=mask) if valid_cidr(sn, ip_network(nxt)))
            nxt = str(subnet_cidr.broadcast_address + 1) # raises `TypeError: 'Output' object is not callable`

            yield {
                'name': vpc.name.apply(lambda x: f'{x}-{subnet.get("name")}_{availability_zone}'),
                'cidr_block': str(subnet_cidr),
                'has_natgw': subnet.get('has_natgw', False),
                'availability_zone': availability_zone,
                'kind': subnet.get('kind'),
            }