Private function to list contents of a queue

def _list_items(queue):
    '''
    Private function to list contents of a queue
    '''
    con = _conn(queue)
    with con:
        cur = con.cursor()
        cmd = 'SELECT name FROM {0}'.format(queue)
        log.debug('SQL Query: %s', cmd)
        cur.execute(cmd)
        contents = cur.fetchall()
    return contents