from shutil import move
下面再添加一行
from shutil import copy
也就是变成
from shutil import move
from shutil import copy
后面的代码改成
elif pic.endswith('_16.jpg'):
copy(root+"\\"+pic, zhutudir+"\\"+"主图3.jpg")
move(root+"\\"+pic, skudir+"\\"+pic)
elif pic.endswith('_15.jpg'):
copy(root+"\\"+pic, zhutudir+"\\"+"主图4.jpg")
move(root+"\\"+pic, skudir+"\\"+pic)