Question

我无法扩展列出专辑ID所需的API调用，以便能够列出专辑中包含的项目。下面显示了我为检索专辑ID所做的操作的一个示例。除了该示例之外，我还尝试扩展此脚本以能够列出特定专辑中包含的项目。

from httplib2 import Http
from oauth2client import file, client, tools
from apiclient.discovery import build

SCOPES = 'https://www.googleapis.com/auth/photoslibrary.readonly'
store = file.storage('credentials.json')
creds = store.get()
if not creds or creds.invalid:
    flow = client.flow_from_clientsecrets('client_secret.json', SCOPES)
    creds = tools.run_flow(flow, store)
service = build('photoslibrary', 'v1', http=creds.authorize(Http()))

hasNextPageToken = False
nextPageToken = ""

results = service.albums().list(pageSize=10).execute()

if 'nextPageToken' in results:
    hasNextPageToken = True
    nextPageToken = results['nextPageToken']
    for album in results['albums']:
        albumId = album['id']
        print(albumId)

现在，对于我尝试从上面的示例中修改的代码，以便能够列出albumId定义的给定相册中的项目：

from httplib2 import Http
from oauth2client import file, client, tools
from apiclient.discovery import build

SCOPES = 'https://www.googleapis.com/auth/photoslibrary.readonly'
store = file.storage('credentials.json')
creds = store.get()
if not creds or creds.invalid:
    flow = client.flow_from_clientsecrets('client_secret.json', SCOPES)
    creds = tools.run_flow(flow, store)
service = build('photoslibrary', 'v1', http=creds.authorize(Http()))

hasNextPageToken = False
nextPageToken = ""
albumId = [albumIdFromPreviousStep]
results = service.mediaItems().search(pageSize=10,albumId=albumId).execute()

当我尝试打印results时，收到关于接收意外关键字参数albumId的错误。

api调用的搜索格式不同，它是https://photoslibrary.googleapis.com/v1/mediaItems:search

错误是否源自：mediaItems:search，它使Python中的变量无效？还是与搜索调用是POST而不是GET有关？还是其他？

Answer 1

mediaitems:search需要一个JSON结构的参数主体，才能将返回的项目限制为特定的AlbumId。

修改原始帖子中的第二部分代码将获得所需的结果。

from httplib2 import Http
from oauth2client import file, client, tools
from apiclient.discovery import build

SCOPES = 'https://www.googleapis.com/auth/photoslibrary.readonly'
store = file.storage('credentials.json')
creds = store.get()
if not creds or creds.invalid:
    flow = client.flow_from_clientsecrets('client_secret.json', SCOPES)
    creds = tools.run_flow(flow, store)
service = build('photoslibrary', 'v1', http=creds.authorize(Http()))

hasNextPageToken = False
nextPageToken = ""
body = {
    "albumId": [AlbumId],
    "pageSize": 10
    }
results = service.mediaItems().search(body=body).execute()
print(results)

现在，要收集所有其他项目的数据，则需要合并nextPageToken并遍历结果。

Answer 2

我看不到在修改后的代码中定义了albumId的任何地方

results = service.mediaItems().search(pageSize=10,**albumId=albumId**).execute()

您从中复制的代码清楚地定义了它

for album in results['albums']:
    albumId = album['id']
    print(albumId)

相册中的Python Google Photos API列表项

2 个答案: