gistfile1.txt

import eventlet, settings, datetime
from crimes.models import Crime
from django.db.models import Min,Max

pool = eventlet.greenpool.GreenPool(settings.DB_CONNECTIONS)

min_max_id = Crime.objects.all().aggregate(Min('id'),Max('id'))
min_id = min_max_id['id__min']
max_id = min_max_id['id__max']

update_agency_last_updated = lambda qs: qs.update(agency_last_updated=datetime.datetime(2000,1,1))

for i in map(lambda x: x * 1000, xrange(max_id / 1000)):
	qs = Crime.objects.filter(id__gte=i).filter(id__lt=(i+1000))
	pool.spawn_n(update_agency_last_updated, qs)
	
pool.waitall()