data myList mode tmp cnt max_cnt mode_data data 'B', 'A', 'B', 'C', 'A', 'B', 'C' max_cnt = 0 i len(data) tmp = data[i] cnt = 0 j i, len(data) tmp == data[j] cnt = cnt + 1 cnt > max_cnt max_cnt = cnt mode = tmp mode []