Google Cookbook - Google App Engine

# imports 
from django import http
from django import shortcuts
from django.core.paginator import Paginator, InvalidPage, EmptyPage
# your sample class
class Contribution(db.Model):
    contribution_from=db.UserProperty()
    contribution_text=db.TextProperty()
 
# your http response helper class
def respond(request, user, template, params=None):
    if params is None:
       params = {}
    if not template.endswith('.html'):
        template += '.html'
    return shortcuts.render_to_response(template, params)
# Code for Contribution
def contributionindex(request):
    user = users.GetCurrentUser()
    contribution_list = db.GqlQuery('SELECT * FROM Contribution ') 
    paginator = Paginator(contribution_list, 5) # Show 5 contributions per page
    # Make sure page request is an int. If not, deliver first page.
    try:
        page = int(request.GET.get('page', '1'))
    except ValueError:
        page = 1
    # If page request  is out of range, deliver last page of results.
    try:
        records = paginator.page(page)
    except (EmptyPage, InvalidPage):
        records = paginator.page(paginator.num_pages)
      
    values = { 
                 'records'   : records ,                 
    }  
    
    return respond(request, user, 'contribution', values )
     
    # contribution.html is attached