用Python的Django框架编写从Google Adsense中获得报表的应用

from django.contrib.auth.models import Userfrom django.db import modelsfrom oauth2client.django_orm import CredentialsField class Credential(models.Model):  id = models.ForeignKey(User, primary_key=True)  credential = CredentialsField() class Revenue(models.Model):  date = models.DateField(unique=True)  revenue = models.DecimalField(max_digits=7, decimal_places=2)   def __unicode__(self):    return '{0} ${1}'.format(self.date, self.revenue)

import os from django.conf import settingsfrom django.contrib.auth.decorators import login_requiredfrom django.contrib.sites.models import Sitefrom django.http import HttpResponseBadRequest, HttpResponsefrom django.http import HttpResponseRedirectfrom oauth2client import xsrfutilfrom oauth2client.client import flow_from_clientsecretsfrom oauth2client.django_orm import Storage from .models import Credential CLIENT_SECRETS = os.path.join(os.path.dirname(__file__), 'client_secrets.json') FLOW = flow_from_clientsecrets(  CLIENT_SECRETS,  scope='https://www.googleapis.com/auth/adsense.readonly',  redirect_uri='http://{0}/adsense/oauth2callback/'.format(    Site.objects.get_current().domain)) @login_requireddef index(request):  storage = Storage(Credential, 'id', request.user, 'credential')  credential = storage.get()  if credential is None or credential.invalid is True:    FLOW.params['state'] = xsrfutil.generate_token(settings.SECRET_KEY,                            request.user)    authorize_url = FLOW.step1_get_authorize_url()    return HttpResponseRedirect(authorize_url)  else:    return HttpResponse('Already validated.') @login_requireddef auth_return(request):  if not xsrfutil.validate_token(settings.SECRET_KEY,                  request.REQUEST['state'], request.user):    return HttpResponseBadRequest()  credential = FLOW.step2_exchange(request.REQUEST)  storage = Storage(Credential, 'id', request.user, 'credential')  storage.put(credential)  return HttpResponseRedirect("/")

main urls.py: from django.conf.urls import patterns, include, urlfrom django.contrib import admin admin.autodiscover() urlpatterns = patterns(  '',  url(r'^adsense/', include('adsense.urls', namespace='adsense')),   url(r'^admin/doc/', include('django.contrib.admindocs.urls')),  url(r'^admin/', include(admin.site.urls)),)adsense/urls.py: from django.conf.urls import patterns, url urlpatterns = patterns(  'adsense.views',  url(r'^$', 'index', name='index'),  url(r'^oauth2callback/$', 'auth_return', name='auth_return'),)

import datetimeimport httplib2 from apiclient.discovery import buildfrom django.contrib.auth.models import Userfrom oauth2client.django_orm import Storage from .models import Credential, Revenue TODAY = datetime.date.today()YESTERDAY = TODAY - datetime.timedelta(days=1) class Scraper(object):  def get_report(self, start_date=YESTERDAY, end_date=TODAY):    user = User.objects.get(pk=1)    storage = Storage(Credential, 'id', user, 'credential')    credential = storage.get()    if not credential is None or credential.invalid is False:      http = httplib2.Http()      http = credential.authorize(http)      service = build('adsense', 'v1.2', http=http)      reports = service.reports()      report = reports.generate(        startDate=start_date.strftime('%Y-%m-%d'),        endDate=end_date.strftime('%Y-%m-%d'),        dimension='DATE',        metric='EARNINGS',      )      data = report.execute()      for row in data['rows']:        date = row[0]        revenue = row[1]         record = Revenue()        try:          r = Revenue.objects.get(date=date)          pk = r.id        except Revenue.DoesNotExist:          pk = None        record.id = pk        record.date = date        record.revenue = revenue        record.save()