def process_ports_list(ports_list: list):
    """
    :param ports_list: list of ports
                       [{'port name': 'RAW_L0', 'port size': 'L0_SIZE_RGB', 'port type': 'B'}]
    :return: A list only with the port name
            'RAW_L0, '
    """
    string_to_return = ''

    if ports_list is None:
        string_to_return = 'None'
    else:
        for i in range(len(ports_list)):
            string_to_return += ports_list[i]['port name'] + ", "

    return string_to_return