我的情况与this guy https://stackoverflow.com/questions/10112939/login-required-401-unauthorized-message-when-calling-the-v3-google-calendar-ap（只是我的问题与Python有关）：我正在尝试使用服务帐户检索数据（使用这个例子 http://code.google.com/p/google-api-python-client/source/browse/samples/service_account/tasks.py阅读后这个博客条目 http://googleappsdeveloper.blogspot.com.ar/2011/12/calendar-api-v3-2-legged-oauth-java.html因为我的应用程序是谷歌应用程序）但我遇到了要求登录错误，我不明白为什么。
让我用一个完整的例子来表示它：
In [1]: import httplib2
In [2]: from apiclient.discovery import build
In [3]: from oauth2client.client import SignedJwtAssertionCredentials
In [4]: f = open('abd45679ffg32343-privatekey.p12', 'rb')
In [5]: key = f.read()
In [6]: f.close()
In [7]: credentials = SignedJwtAssertionCredentials(
'[email protected] /cdn-cgi/l/email-protection', key,
scope=['https://www.googleapis.com/auth/calendar',
'https://www.googleapis.com/auth/calendar.readonly'])
In [8]: http = httplib2.Http()
In [9]: http = credentials.authorize(http)
In [10]: service = build(serviceName='calendar', version='v3', http=http,
....: developerKey='XcddfRgtyt676grggtT')
2012-05-14 18:24:35,170 INFO [root][MainThread] URL being requested: https://www.googleapis.com/discovery/v1/apis/calendar/v3/rest
2012-05-14 18:24:35,170 INFO [oauth2client.client][MainThread] Attempting refresh to obtain initial access_token
2012-05-14 18:24:35,179 INFO [oauth2client.client][MainThread] Refresing access_token
In [11]: service.calendarList().list().execute()
2012-05-14 18:25:00,418 INFO [root][MainThread] URL being requested https://www.googleapis.com/calendar/v3/users/me/calendarList?alt=json&key=XcddfRgtyt676grggtT
---------------------------------------------------------------------------
HttpError Traceback (most recent call last)
/home/mariano/Code/Kalendar/rest/kalendar/<ipython-input-12-0cb769615d74> in <module>()
----> 1 service.calendarList().list().execute()
/home/mariano/Code/Kalendar/rest/env/local/lib/python2.7/site-packages/google_api_python_client-1.0beta8-py2.7.egg/apiclient/http.pyc in execute(self, http)
387
388 if resp.status >= 300:
--> 389 raise HttpError(resp, content, self.uri)
390 return self.postproc(resp, content)
391
HttpError: <HttpError 403 when requesting https://www.googleapis.com/calendar/v3/users/me/calendarList?alt=json&key=XcddfRgtyt676grggtT returned "The user must be signed up for Google Calendar.">
任何关于为什么会发生这种情况以及如何解决它的指示将不胜感激。
