在 Google Ads API 中，实体的唯一标识符称为资源名称，由采用可预测格式的字符串表示。如果您知道资源名称的组成组成部分，则可以使用许多 Service 对象上存在的辅助方法生成资源名称。
服务路径方法
所有旨在读取或更改 API 中特定类型的对象的服务都具有辅助方法，以便于构建 resource_name。例如，为 Campaign 对象创建资源名称：
from google.ads.googleads.client import GoogleAdsClient
client = GoogleAdsClient.load_from_storage()
customer_id = "7892134783"
campaign_id = "1234567890"
campaign_service = client.get_service("CampaignService")
resource_name = campaign_service.campaign_path(customer_id, campaign_id)
从客户端库 10.0.0 版开始，每项服务都附带了相应的 parse_*_path 方法，用于将 resource_name 解构为各个分段，例如：
from google.ads.googleads.client import GoogleAdsClient
client = GoogleAdsClient.load_from_storage()
resource_name = "customers/7892134783/campaigns/1234567890"
campaign_service = client.get_service('CampaignService')
segments = campaign_service.parse_campaign_path(resource_name)
customer_id = segments["customer_id"]
campaign_id = segments["campaign_id"]
复合资源名称
从客户端库 9.0.0 版开始，服务的路径帮助程序会构建资源名称的复合段。此方法接受复合 ID 的不同部分作为单独的参数：
from google.ads.google_ads.client import GoogleAdsClient
customer_id = "0987654321"
ad_group_id = "1234567890"
criterion_id = "74932"
client = GoogleAdsClient.load_from_storage()
ad_group_criterion_service = client.get_service("AdGroupCriterionService")
# An AdGroupCriterion resource name that uses the above IDs looks like this:
# "customers/0987654321/adGroupCriteria/1234567890~74932"
resource_name = ad_group_criterion_service.ad_group_criterion_path(
customer_id, ad_group_id, criterion_id
)
9.0.0 之前的版本
在 9.0.0 版之前，服务的路径帮助程序不会构建资源名称的复合段。这些细分需要由调用方提供。客户端库有个小实用程序可帮助您完成此项操作：
from google.ads.google_ads.client import GoogleAdsClient
from google.ads.google_ads.util import ResourceName
customer_id = "0987654321"
ad_group_id = "1234567890"
criterion_id = "74932"
client = GoogleAdsClient.load_from_storage()
ad_group_criterion_service = client.get_service("AdGroupCriterionService")
# An AdGroupCriterion resource name that uses the above IDs looks like this:
# "customers/0987654321/adGroupCriteria/1234567890~74932"
composite_id = ResourceName.format_composite(ad_group_id, criterion_id)
resource_name = ad_group_criterion_service.ad_group_criterion_path(
customer_id, composite_id
)