Actually the problem was something I really do not expected. items.append(DIV(DIV(*[data[item]], _id = 'wrap'), _id = 'ui-tabs-'+str(i)))
needed to be items.append(DIV(DIV([data[item]], _id = 'wrap'), _id = 'ui-tabs-'+str(i))) No star (*) needed!!!
Actually the problem was something I really do not expected. items.append(DIV(DIV(*[data[item]], _id = 'wrap'), _id = 'ui-tabs-'+str(i)))
needed to be items.append(DIV(DIV([data[item]], _id = 'wrap'), _id = 'ui-tabs-'+str(i))) No star (*) needed!!!