資料夾繁簡轉換問題

from os import listdir, walk
from os.path import join, isdir
from opencc import OpenCC
folderpath="D:\\Test"

for namelists2 in walk(folderpath):
    for x in namelists2:
        NameAndPath=join(folderpath, str(x))
        if isdir(NameAndPath):
            with open('allfolders.txt',mode='a+', encoding='utf-8') as list:
                cc=OpenCC('s2t')
                y=cc.convert(x)
                list.write(("os.rename(\"")+join(folderpath, x)+("\", ")+("\"")+join(folderpath, y)+"\""+")"+"\n" )

        else:
            pass