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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 user_addmedia(userids, active, mediatypeid, period, sendto, severity, **kwargs):
    '''
    Add new media to multiple users.

    .. versionadded:: 2016.3.0

    :param userids: ID of the user that uses the media
    :param active: Whether the media is enabled (0 enabled, 1 disabled)
    :param mediatypeid: ID of the media type used by the media
    :param period: Time when the notifications can be sent as a time period
    :param sendto: Address, user name or other identifier of the recipient
    :param severity: Trigger severities to send notifications about
    :param _connection_user: Optional - zabbix user (can also be set in opts or pillar, see module's docstring)
    :param _connection_password: Optional - zabbix password (can also be set in opts or pillar, see module's docstring)
    :param _connection_url: Optional - url of zabbix frontend (can also be set in opts, pillar, see module's docstring)

    :return: IDs of the created media.

    CLI Example:
    .. code-block:: bash

        salt '*' zabbix.user_addmedia 4 active=0 mediatypeid=1 period='1-7,00:00-24:00' sendto='support2@example.com'
        severity=63

    '''
    conn_args = _login(**kwargs)
    ret = {}
    try:
        if conn_args:
            method = 'user.addmedia'
            params = {"users": []}
            # Users
            if not isinstance(userids, list):
                userids = [userids]
            for user in userids:
                params['users'].append({"userid": user})
            # Medias
            params['medias'] = [{"active": active, "mediatypeid": mediatypeid, "period": period,
                                 "sendto": sendto, "severity": severity}, ]

            ret = _query(method, params, conn_args['url'], conn_args['auth'])
            return ret['result']['mediaids']
        else:
            raise KeyError
    except KeyError:
        return ret