success: function(data) {
    $.each(data, function() {
        $.each(this, function(k, v) {
            //do something with v
        });
    });
}

lst1 = [1, 2, 3, 4, 5]
lst2 = ['a', 'b', 'c', 'd', 'e']

context = {
    'labels'   : lst1,
    'sk_labels': lst2
}

return HttpResponse(json.dumps(context), content_type='application/json')