如何删除文件夹的内容？

import os, shutilfolder = '/path/to/folder'for filename in os.listdir(folder):    file_path = os.path.join(folder, filename)    try:        if os.path.isfile(file_path) or os.path.islink(file_path): os.unlink(file_path)        elif os.path.isdir(file_path): shutil.rmtree(file_path)    except Exception as e:        print('Failed to delete %s. Reason: %s' % (file_path, e))