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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 get_master_status(**connection_args):
    '''
    Retrieves the master status from the minion.

    Returns::

        {'host.domain.com': {'Binlog_Do_DB': '',
                         'Binlog_Ignore_DB': '',
                         'File': 'mysql-bin.000021',
                         'Position': 107}}

    CLI Example:

    .. code-block:: bash

        salt '*' mysql.get_master_status

    '''
    mod = sys._getframe().f_code.co_name
    log.debug('%s<--', mod)
    conn = _connect(**connection_args)
    if conn is None:
        return []
    rtnv = __do_query_into_hash(conn, "SHOW MASTER STATUS")
    conn.close()

    # check for if this minion is not a master
    if not rtnv:
        rtnv.append([])

    log.debug('%s-->%s', mod, len(rtnv[0]))
    return rtnv[0]