Show Running Instances on AWS including key/tag pairs

-
import boto
import json, ast

ec2 = boto.connect_ec2()
reservations = ec2.get_all_reservations(
    filters={'instance-state-name': 'running'})
for reservation in reservations:
    for instance in reservation.instances:
        print instance.id + ', '+ instance.instance_type + ', ' + str(ast.literal_eval(json.dumps(instance.tags)) )

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