# This is our application object. It could have any name,# except when using mod_wsgi where it must be "application"def application( # It accepts two arguments:      # environ points to a dictionary containing CGI like environment variables      # which is filled by the server for each received request from the client      environ,      # start_response is a callback function supplied by the server      # which will be used to send the HTTP status and headers to the server      start_response):   # build the response body possibly using the environ dictionary   response_body = 'The request method was %s' % environ['REQUEST_METHOD']   # HTTP response code and message   status = '200 OK'   # These are HTTP headers expected by the client.   # They must be wrapped as a list of tupled pairs:   # [(Header name, Header value)].   response_headers = [('Content-Type', 'text/plain'),                       ('Content-Length', str(len(response_body)))]   # Send them to the server using the supplied function   start_response(status, response_headers)   # Return the response body.   # Notice it is wrapped in a list although it could be any iterable.   return [response_body]

def blog_list(request):    blogs = Article.objects.all().order_by('-publish_date')    blog_num = Article.objects.count()    return render_to_response('index.html', {"blogs": blogs,"blog_num":blog_num}, context_instance=RequestContext(request))def blog_detail(request):    bid = request.GET.get('id','')    blog = Article.objects.get(id=bid)    return render_to_response('blog.html',{'blog':blog})

import reclass WSGIapp:    headers = []    def __init__(self,urls=()):        self.urls = urls        self.status = '200 OK'    def __call__(self,environ,start_response):        x = self.mapping_urls(environ)        PRint x        start_response(self.status,self.headers)        if isinstance(x,str):            return iter([x])        else:            return iter(x)    def mapping_urls(self,environ):        path = environ['PATH_INFO']        for pattern,name in self.urls:            m = re.match('^'+pattern+'$',path)            if m:                args = m.groups()                func = globals()[name]                return func(*args)        return self.notfound()    def notfound(self):        self.status = '404 Not Found'        self.headers = [('Content-Type','text/plain')]        return '404 Not Found/n'    @classmethod    def header(cls,name,value):        cls.headers.append((name,value))def GET_index(*args):    WSGIapp.header('Content-Type','text/plain')    return 'Welcome!/n'def GET_hello(*args):    WSGIapp.header('Content-Type','text/plain')    return 'Hello %s!/n' % argsurls = [    ('/','GET_index'),    ('/hello/(.*)','GET_hello')    ]wsgiapp = WSGIapp(urls)if __name__ == '__main__':    from wsgiref.simple_server import make_server    httpd = make_server('',8000,wsgiapp)    print 'server starting...'    httpd.serve_forever()