尝试通过 Google Picasa API 添加照片或相册时无法进行身份验证答案

【问题标题】：Unable to authenticate when trying to add photos or albums through Google Picasa API尝试通过 Google Picasa API 添加照片或相册时无法进行身份验证
【发布时间】：2016-04-08 21:07:31
【问题描述】：

我正在尝试通过 Picasa 的 API 将照片上传到相册，但是遇到了身份验证错误。

我的凭据在程序启动时已成功验证，而不是在我尝试上传照片或添加相册时

这是我的代码：

import gdata.photos.service
import gdata.media
import gdata.geo

gd_client = gdata.photos.service.PhotosService()
gd_client.email = 'username@gmail.com'
gd_client.password = 'password'
gd_client.source = 'exampleCo-exampleApp-1'
gd_client.ProgrammaticLogin()

username = 'username'
albums = gd_client.GetUserFeed(user=username)
album_id = albums.entry[0].gphoto_id.text
album_url = '/data/feed/api/user/%s/albumid/%s' % (username, album_id)
path = 'C:\Users\Public\Pictures\Sample Pictures\Desert.jpg'

album = gd_client.InsertAlbum(title='New album', summary='This is an album')

photo = gd_client.InsertPhotoSimple(album_url, 'New Photo', 
    'Uploaded using the API', path, content_type='image/jpeg')

这是我在尝试添加相册或上传照片时收到的错误：

Traceback (most recent call last):
  File "C:/Users/1020071/Documents/test.py", line 19, in <module>
    album = gd_client.InsertAlbum(title='New album', summary='This is an album')
  File "C:\Python27\lib\site-packages\gdata\photos\service.py", line 358, in InsertAlbum
    raise GooglePhotosException(e.args[0])
GooglePhotosException: (403, 'Forbidden', 'Modification only allowed with api authentication.')

这是我一直关注的指南：https://developers.google.com/picasa-web/docs/1.0/developers_guide_python#request-a-list-of-albums

【问题讨论】：

不是问题，但在路径中使用原始字符串或正斜杠

标签： python api authentication photo picasa

【解决方案1】：

您是否真的对 OAuth2 进行了更改？以下代码应该可以工作：

def OAuth2Login(client_secrets, credential_store, email):
scope='https://picasaweb.google.com/data/'
user_agent='testingApp'

storage = Storage(credential_store)
credentials = storage.get()
if credentials is None or credentials.invalid:
    flow = flow_from_clientsecrets(client_secrets, scope=scope, redirect_uri='urn:ietf:wg:oauth:2.0:oob')
    uri = flow.step1_get_authorize_url()
    webbrowser.open(uri)
    code = raw_input('Enter the authentication code: ').strip()
    credentials = flow.step2_exchange(code)
    storage.put(credentials)

if (credentials.token_expiry - datetime.utcnow()) < timedelta(minutes=5):
    http = httplib2.Http()
    http = credentials.authorize(http)
    credentials.refresh(http)

gd_client = gdata.photos.service.PhotosService(source=user_agent,
                                           email=email,
                                           additional_headers={'Authorization' : 'Bearer %s' % credentials.access_token})

return gd_client
album = gd_client.InsertAlbum('test', 'My Test Album', access='protected')

您应该在 Google 开发者门户中创建一个 API 密钥并下载 json 密钥。这个 repo 很有帮助 https://github.com/MicOestergaard/picasawebuploader#authentication.

【讨论】：