给我一段把文件夹中的所有图片名称删除最后几个字符，格式保持不变的python代码

答：import os
for filename in os.listdir(path):
file_name, file_ext = os.path.splitext(filename)
new_name = file_name[:-n] + file_ext
os.rename(os.path.join(path, filename), os.path.join(path, new_name))