如何操作 Google Ads API 的 Enum 类对象 - python

Question

我正在使用 python 客户端库连接到 Google Ads 的 API。

    ga_service = client_service.get_service('GoogleAdsService')
    query = ('SELECT campaign.id, campaign.name, campaign.advertising_channel_type '
            'FROM campaign WHERE date BETWEEN \''+fecha+'\' AND \''+fecha+'\'')

    response = ga_service.search(<client_id>, query=query,page_size=1000)
    result = {}
    result['campanas'] = []

    try:
        for row in response:
            print row
            info = {}
            info['id'] = row.campaign.id.value
            info['name'] = row.campaign.name.value
            info['type'] = row.campaign.advertising_channel_type

当我解析这些值时，这是我得到的结果：

{
  "campanas": [
    {
      "id": <campaign_id>, 
      "name": "Lanzamiento SIKU", 
      "type": 2
    }, 
    {
      "id": <campaign_id>, 
      "name": "lvl1 - website traffic", 
      "type": 2
    }, 
    {
      "id": <campaign_id>, 
      "name": "Lvl 2 - display", 
      "type": 3
    }
  ]
}

为什么我得到 result["type"] 的整数？当我检查回溯调用时，我可以看到一个字符串：

campaign {
  resource_name: "customers/<customer_id>/campaigns/<campaign_id>"
  id {
    value: 397083380
  }
  name {
    value: "Lanzamiento SIKU"
  }
  advertising_channel_type: SEARCH
}

campaign {
  resource_name: "customers/<customer_id>/campaigns/<campaign_id>"
  id {
    value: 1590766475
  }
  name {
    value: "lvl1 - website traffic"
  }
  advertising_channel_type: SEARCH
}

campaign {
  resource_name: "customers/<customer_id>/campaigns/<campaign_id>"
  id {
    value: 1590784940
  }
  name {
    value: "Lvl 2 - display"
  }
  advertising_channel_type: DISPLAY
}

我搜索了 API的文档，发现这是因为字段：advertising_channel_type 是数据类型：Enum。如何操作 Enum 类的这个对象来获取字符串值？他们的文档中没有关于此的有用信息。

请帮忙 ！！

Answer 1

该Enum的想出一些方法来索引和字符串之间的转换

channel_types = client_service.get_type('AdvertisingChannelTypeEnum')

channel_types.AdvertisingChannelType.Value('SEARCH')
# => 2
channel_types.AdvertisingChannelType.Name(2)
# => 'SEARCH'

这是通过查看文档字符串发现的，例如

channel_types.AdvertisingChannelType.__doc__
# => 'A utility for finding the names of enum values.'

Answer 2

只需通过创建一个列表来解决它

lookup_list = ['DISPLAY', 'HOTEL', 'SEARCH', 'SHOPPING', 'UNKNOWN', 'UNSPECIFIED', 'VIDEO']

并将最后一行的分配更改为

info['type'] = lookup_list[row.campaign.advertising_channel_type]