def get_text_from_selected_items(tree_widget, column_index):
    """
    Returns the text of the selected treeWidgetItems as a list of string

    :param tree_widget: your QTreeWidget
    :param column_index: <int> number of the column you want to ge the text from
    :return:
    """
    text_list = []
    model_indexes = tree_widget.selectedIndexes()
    for model_index in model_indexes:
        item = tree_widget.itemFromIndex(model_index)

        text_list.append(item.text(column_index))

    return text_list