how do i filter an itertools chain() result?
django, django-views, python, python-itertools
Solution
import operator
ourtags = sorted(ourtags, key=operator.attrgetter('date_added'))
Problem
in my views, if i import an itertools module: ``` from itertools import chain ``` and i chain some objects with it: ``` franktags = Frank.objects.order_by('date_added').reverse().filter(topic__exact='art') amytags = Amy.objects.order_by('date_added').reverse().filter(topic__exact='art') timtags = Tim.objects.order_by('date_added').reverse().filter(topic__exact='art') erictags = Eric.objects.order_by('date_added').reverse().filter(topic__exact='art') ourtags = list(chain(franktags, amytags, timtags, erictags)) ``` how do i then order "ourtags" by the "date_added"? not surpisingly, ``` ourtags = list(chain(franktags, amytags, timtags, erictags)).order_by('date_added') ``` returns an "'list' object has no attribute 'order_by'" error.