Write an algorithm to sort these objects in ascending order, by the property "score".

object_sort.py

import random
import hashlib

class SearchResult(object):
  key = None
  score = None
  def __init__(self):
    self.score = round(random.random(),2)*5
    h = hashlib.md5()
    h.update(str(self.score))
    self.key = h.hexdigest()
  def __str__(self):
    return 'SearchResult "'+str(self.key)+'" ::: VALUE: "'+str(self.score)+'".'

### Generate some objects
objects = [SearchResult() for i in xrange(0, 25)]

### Fill this output array! Sort by search result score. Must output a list of keys ordered by score (asc).
output = []