fab

fabfile.py

from fabric.api import *
import boto.ec2
from clom import clom


def create_vm():
    conn = boto.ec2.connect_to_region(
            'us-west-2',
            aws_access_key_id='AKIAJAJ7JAFYVAYKDXPA',
            aws_secret_access_key='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')

    conn.run_instances(
            'ami-c6cc43f6',
            key_name='logan',
            instance_type='m1.small',
            security_groups=['launch-wizard-1'])

    reservations = conn.get_all_reservations()
    instances = reservations[-1].instances
    inst = instances[0]

    print 'The ip address is: %s' % inst.ip_address
    print 'The default username is "ubuntu"'

on line 12, the run_instances call will return the reservation it created. You should save this into a variable and then just use the instances property. This will also eliminate the need to make the get_all_reservations call.