from gcore import Gcore

client = Gcore(
    api_key="My API Key",
)
page = client.cloud.reserved_fixed_ips.list(
    project_id=0,
    region_id=0,
)
page = page.results[0]
print(page.network_id)

{
  "count": 1,
  "results": [
    {
      "allowed_address_pairs": [
        {
          "ip_address": "192.168.123.20",
          "mac_address": "00:16:3e:f2:87:16"
        },
        {
          "ip_address": "192.168.0.2",
          "mac_address": "00:16:3e:f2:87:89"
        }
      ],
      "attachments": [
        {
          "resource_id": "e3c6ee77-48cb-416b-b204-11b492cc776e3",
          "resource_type": "instance"
        },
        {
          "resource_id": "e73a4dbd-da04-4b6e-8ef9-07e8742001b7",
          "resource_type": "ai_cluster"
        }
      ],
      "created_at": "2019-06-18T11:56:16+0000",
      "creator_task_id": "30378aea-9343-4ff6-be38-9756094e05da",
      "fixed_ip_address": "10.100.179.44",
      "fixed_ipv6_address": null,
      "is_external": false,
      "is_vip": false,
      "name": "Reserved fixed ip 10.100.179.44",
      "network": {
        "created_at": "2019-06-18T11:56:16+0000",
        "creator_task_id": "fd50fdd1-0482-4c9b-b847-fc9924665af6",
        "default": true,
        "external": true,
        "id": "eed97610-708d-43a5-a9a5-caebd2b7b4ee",
        "mtu": 1500,
        "name": "public",
        "port_security_enabled": true,
        "project_id": 1337,
        "region": "Luxembourg 1",
        "region_id": 7,
        "segmentation_id": 9,
        "shared": false,
        "subnets": [
          "f00624ab-41bc-4d54-a723-1673ce32d997",
          "41e0f698-4d39-483b-b77a-18eb070e4c09"
        ],
        "tags": [
          {
            "key": "my-tag",
            "read_only": false,
            "value": "my-tag-value"
          }
        ],
        "task_id": null,
        "type": "vlan",
        "updated_at": "2019-06-18T11:57:00+0000"
      },
      "network_id": "eed97610-708d-43a5-a9a5-caebd2b7b4ee",
      "port_id": "817c8a3d-bb67-4b88-a0d1-aec980318ff1",
      "project_id": 1337,
      "region": "Luxembourg 1",
      "region_id": 7,
      "reservation": {
        "resource_id": "83ed4ea6-bcae-4100-9e4d-36e541ff919b",
        "resource_type": "instance",
        "status": "attached"
      },
      "status": "DOWN",
      "subnet_id": "747db04a-2aac-4fda-9492-d9b85a798c09",
      "subnet_v6_id": null,
      "task_id": null,
      "updated_at": "2019-06-18T11:57:00+0000"
    }
  ]
}