如何使用“double for loop in python”获取不重复（复制）的数据（值）作为最后一个循环值

Question

是否将这些代码检查为python 产出（预期）：['A'：[10,11,12,13]，'B'：[1,2,3,4]] 但是，“B”值重复['A'：[1,2,3,4]，'B'：[1,2,3,4]

import os
import glob
import pandas as pd
import numpy as np

Lotno_list = ['A','B']

count_merge = []
total_count = []
total_dict = {}

for Lotno in Lotno_list:
  folder_list = os.listdir(r'../{}/'.format(lotno)) # get the folder_list in the folder (Lotno) 
  count_merge.clear()
  for element in folder_list: # ex) folder_list = ['A01','A02','A03','A04'] when Lotno = 'A'into for
    element_list = os.listdir(r'../{}/{}/'.format(lotno,element)) 
    element_count = len(element_list)
    # Count files in the folder ex) A01 ... 
    count_merge.append(element_count) 
  total_dict[Lotno] = count_merge
print(total_dict)