如何在python中比较两个目录并输出更改后的文件

我在linux中有两个目录,其中有两个文件。我需要比较这两个目录并打印出更改的文件。

folder1:
  file1.txt   file2.txt

folder2:
  file1.txt   file2.txt

我需要比较一下 folder1 具有 folder2 并打印出这两个目录中不相同的文件名。我想先用 ls 命令获取文件列表并将其放入 list 然后使用python的 filecmp ,如下所示:

import os
import filecmp

folder1_path = "/home/user/folder1/"
folder2_path = "/home/user/folder2/"

def ls(path):
   all = []
   walked = os.walk(path)
   for base, sub_f, files in walked:           
       for sub in sub_f:           
            entry = os.path.join(base,sub)
            entry = entry[len(path):].strip("\\")
            all.append(entry)

       for file in files:          
           entry = os.path.join(base,file)
           entry = entry[len(path):].strip("\\")
           all.append(entry)
    all.sort()
    return all

def folder_diff(folder1_path, folder2_path):
    folder1_list = ls(folder1_path)
    folder2_list = ls(folder2_path)

    for item1, item2 in zip(folder1_list, folder2_list):
        res = filecmp.cmp(folder1_path + item1, folder2_path + item2)

data = folder_diff(folder1_path, folder2_path)
print(data)

这是一个错误 FileNotFound 文件同时存在于两个文件夹中。有谁能建议一下这方面的最新情况吗?谢谢