gistfile1.txt

from boto import connect_ec2

def get_ri_costs(connection):
    """
    @connection: EC2Connection obj

    returns: list
    """
    ri_costs = []
    ris = connection.get_all_reserved_instances_offerings(include_marketplace=False,
        product_description='Linux/UNIX')
    token = getattr(ris, 'nextToken', None)
    ri_costs.append(ris)
    # results are paginated
    while token:
        ris = connection.get_all_reserved_instances_offerings(include_marketplace=False,
            product_description='Linux/UNIX', next_token=token)
        ri_costs.append(ris)
        token = getattr(ris, 'nextToken', None)
    # flatten list of lists into one list
    ri_costs = sum(ri_costs, [])
    return ri_costs

conn = connect_ec2()
ris = get_ri_costs(conn)
for a in ris:
    if 'c4' in a.instance_type:
        print a.pricing_details