def get_response(self, request):
        "Returns an HttpResponse object for the given HttpRequest"
        from django.core import exceptions, urlresolvers
        from django.conf import settings

        try:
            # Setup default url resolver for this thread, this code is outside
            # the try/except so we don't get a spurious "unbound local
            # variable" exception in the event an exception is raised before
            # resolver is set
            urlconf = settings.ROOT_URLCONF
            urlresolvers.set_urlconf(urlconf)
            resolver = urlresolvers.RegexURLResolver(r'^/', urlconf)
            try:
                response = None
                # Apply request middleware
                for middleware_method in self._request_middleware:
                    response = middleware_method(request)
                    if response:
                        break

                if response is None:
                    if hasattr(request, "urlconf"):
                        # Reset url resolver with a custom urlconf.
                        urlconf = request.urlconf
                        urlresolvers.set_urlconf(urlconf)
                        resolver = urlresolvers.RegexURLResolver(r'^/', urlconf)

                    callback, callback_args, callback_kwargs = resolver.resolve(
                            request.path_info)

                    # Apply view middleware
                    for middleware_method in self._view_middleware:
                        response = middleware_method(request, callback, callback_args, callback_kwargs)
                        if response:
                            break

                if response is None:
                    try:
                        response = callback(request, *callback_args, **callback_kwargs)
                    except Exception, e:
                        # If the view raised an exception, run it through exception
                        # middleware, and if the exception middleware returns a
                        # response, use that. Otherwise, reraise the exception.
                        for middleware_method in self._exception_middleware:
                            response = middleware_method(request, e)
                            if response:
                                break
                        if response is None:
                            raise

                # Complain if the view returned None (a common error).
                if response is None:
                    try:
                        view_name = callback.func_name # If it's a function
                    except AttributeError:
                        view_name = callback.__class__.__name__ + '.__call__' # If it's a class
                    raise ValueError("The view %s.%s didn't return an HttpResponse object." % (callback.__module__, view_name))

                # If the response supports deferred rendering, apply template
                # response middleware and the render the response
                if hasattr(response, 'render') and callable(response.render):
                    for middleware_method in self._template_response_middleware:
                        response = middleware_method(request, response)
                    response = response.render()

            except http.Http404, e:
                logger.warning(request.path % 'Not Found: %s',
                            extra={
                                'status_code': 404,
                                'request': request
                            })
                if settings.DEBUG:
                    from django.views import debug
                    response = debug.technical_404_response(request, e)
                else:
                    try:
                        callback, param_dict = resolver.resolve404()
                        response = callback(request, **param_dict)
                    except:
                        try:
                            response = self.handle_uncaught_exception(request, resolver, sys.exc_info())
                        finally:
                            receivers = signals.got_request_exception.send(sender=self.__class__, request=request)
            except exceptions.PermissionDenied:
                logger.warning('Forbidden (Permission denied): %s' % request.path,
                            extra={
                                'status_code': 403,
                                'request': request
                            })
                response = http.HttpResponseForbidden('<h1>Permission denied</h1>')
            except SystemExit:
                # Allow sys.exit() to actually exit. See tickets #1023 and #4701
                raise
            except: # Handle everything else, including SuspiciousOperation, etc.
                # Get the exception info now, in case another exception is thrown later.
                receivers = signals.got_request_exception.send(sender=self.__class__, request=request)
                response = self.handle_uncaught_exception(request, resolver, sys.exc_info())
        finally:
            # Reset URLconf for this thread on the way out for complete
            # isolation of request.urlconf
            urlresolvers.set_urlconf(None)

        try:
            # Apply response middleware, regardless of the response
            for middleware_method in self._response_middleware:
                response = middleware_method(request, response)
            response = self.apply_response_fixes(request, response)
        except: # Any exception should be gathered and handled
            receivers = signals.got_request_exception.send(sender=self.__class__, request=request)
            response = self.handle_uncaught_exception(request, resolver, sys.exc_info())

        return response
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.3/django/core/handlers/base.py/BaseHandler.get_response/swapped operands of `%`