Boto fetch all running instance

boto_get_all_running_instance.py

from pprint import pprint
from boto import ec2


def main():
    ec2conn=ec2.connect_to_region('us-east-1')
    reservations=ec2conn.get_all_instances(filters={"tag:tag_name": "value",'instance-state-name' : 'running'}})

    output=[]
    for reservation in reservations:
        #instance is a list. type is <resultset>, a modified version of python LIST
        resultset=reservation.instances
  
        #Get instance object
        instance=resultset[0]
            newEntry=instance.private_ip_address+"("+instance.tags['Name']+" )"
            print newEntry
            output.append(str(newEntry))
    

#pprint(output)
if __name__ = __main__:
    main()