In your views.py use @csrf_exempt decorator above your function, for that need to import this decorator first like this
from django.views.decorators.csrf import csrf_exempt
then use it in your view function for eg.
@csrf_exempt
def sample_func(request):
if request.user.is_authenticated():
res = {"is_authenticated": "true"}
else:
res = {}
return render_to_response('app/index.html', res, context_instance=RequestContext(request))
And after that in your index.html file call this decorator in form tag like this
<form method="" action="">
{% csrf_token %}
.......
</form>