Fetch all instances across all regions

get_all_instances_all_regions.py

import boto.ec2
import sys
from pprint import pprint

all_regions = [x.name for x in 
               boto.ec2.connect_to_region('us-east-1').get_all_regions()]
instances=[]
for region in all_regions:
  instances.extend(boto.ec2.connect_to_region(region).get_only_instances())

instance = next((x for x in instances if x.id == sys.argv[1]), None)
pprint(vars(instance) if instance else 'id not found')