Django: how to generate json response.

import json
def some_view(request):
    result = []
    result.append({"user":request.user})
    result.append({"key":request.session.key})
    return HttpResponse(json.dumps(result), mimetype='application/json')

Source: http://garmoncheg.blogspot.com/2011/06/django-how-to-generate-json-response.html