如何从Openstack nova列表中仅获取ID Name和Networks字段

from openstack import connection

# 进行身份验证
conn = connection.Connection(auth_url='YOUR_AUTH_URL',
                             project_name='YOUR_PROJECT_NAME',
                             username='YOUR_USERNAME',
                             password='YOUR_PASSWORD',
                             user_domain_id='YOUR_USER_DOMAIN_ID',
                             project_domain_id='YOUR_PROJECT_DOMAIN_ID')

# 获取虚拟机实例列表
servers = conn.compute.servers()

# 遍历每个实例并提取所需字段
for server in servers:
    instance_id = server.id
    instance_name = server.name
    instance_networks = server.networks

    # 打印字段值
    print("Instance ID: ", instance_id)
    print("Instance Name: ", instance_name)
    print("Instance Networks: ", instance_networks)