Question

Queryset with annotations gave me result list like this:

[{'completed__sum': 1, 'offer__count': 2, 'offer': 1}, {'completed__sum': 0, 'offer__count': 1, 'offer': 2}]  

I want to get something like that:

{1:{'completed__sum': 1, 'offer__count': 2},2:{'completed__sum': 0, 'offer__count': 1}}  

where keys 1 and 2 are values of 'offer': X field.

What is the fastest way to convert result of query to needed form? Or is there any way to receive result of queryset in that format?

---

Here is my QuerySet:

Progress.objects.filter(user=self.request.user).values('offer').annotate(Count('offer')).annotate(Sum('completed'))

My model:

class Progress(models.Model):  
    user = models.ForeignKey(to=User)  
    offer = models.ForeignKey(to=Offer)  
    completed = models.BooleanField(default=False)  

Answer 1

works on python 2.6 +

use the dict constructor with enumerate.

list_of_dicts = [
    {'completed__sum': 1, 'offer__count': 2, 'offer': 1},
    {'completed__sum': 0, 'offer__count': 1, 'offer': 2}]

dictionary = dict((d['offer'], dict((k, v) for k, v in d.items() if k != 'offer')) for d in list_of_dicts)

print dictionary
>>> 
{1: {'completed__sum': 1, 'offer__count': 2}, 2: {'completed__sum': 0, 'offer__count': 1}}

edit: just found a much better way to do this. if you arent using the list anymore and are going to keep only the final results.

dictionary = dict((d.pop('offer'), d) for d in list_of_dicts)