instances.py

import json
import sys
import subprocess

REGIONS = "us-west-1 us-west-2 us-east-1".split()
PROFILES = "default".split()

for region in REGIONS:
    for profile in PROFILES:
        status = json.loads(subprocess.check_output(
            ['aws', '--profile', profile, '--region', region, 'ec2', 'describe-instance-status']))

        statuses = {}
        for s in status['InstanceStatuses']:
            if not 'Events' in s:
                continue
            statuses[s['InstanceId']] = s

        all_ids = statuses.keys()

        details = json.loads(subprocess.check_output(
            ['aws', '--profile', profile, '--region', region, 'ec2', 'describe-instances',
             '--instance-ids'] + all_ids))

        instances = {}

        for r in details['Reservations']:
            for i in r['Instances']:
                instances[i['InstanceId']] = i

        for i in instances.values():
            name, = [t['Value'] for t in i['Tags'] if t['Key'] == 'Name']
            s = statuses[i['InstanceId']]
            e, = s['Events']
            print "%s %s %s/%s" % (i['InstanceId'], name, e['NotBefore'], e['NotAfter'])