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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def queue_exists(name, region, opts=None, user=None):
    '''
    Returns True or False on whether the queue exists in the region

    name
        Name of the SQS queue to search for

    region
        Name of the region to search for the queue in

    opts : None
        Any additional options to add to the command line

    user : None
        Run hg as a user other than what the minion runs as

    CLI Example:

        salt '*' aws_sqs.queue_exists <sqs queue> <region>

    '''
    output = list_queues(region, opts, user)

    return name in _parse_queue_list(output)