Getting all addresses for EC2's registered to an ELB

gistfile1.py

import boto
from boto import regioninfo
from boto import ec2

ACCESS_KEY_ID = '##'
SECRET_ACCESS_KEY = '##'

elb_region = boto.regioninfo.RegionInfo(
    name='ap-southeast-1', 
    endpoint='elasticloadbalancing.ap-southeast-1.amazonaws.com')

elb_connection = boto.connect_elb(
	aws_access_key_id=ACCESS_KEY_ID, 
	aws_secret_access_key=SECRET_ACCESS_KEY, 
	region=elb_region)

ec2_region = ec2.get_region(aws_access_key_id=ACCESS_KEY_ID,
	aws_secret_access_key=SECRET_ACCESS_KEY, 
	region_name='ap-southeast-1')

ec2_connection = boto.ec2.connection.EC2Connection(
	aws_access_key_id=ACCESS_KEY_ID, 
	aws_secret_access_key=SECRET_ACCESS_KEY,
	region=ec2_region)

load_balancer = elb_connection.get_all_load_balancers(load_balancer_names=['MediaPopClients'])[0]
instance_ids = [ instance.id for instance in load_balancer.instances ]
reservations = ec2_connection.get_all_instances(instance_ids)
instance_addresses = [ i.public_dns_name for r in reservations for i in r.instances ]