Linux下如何使用subprocess.call执行包含空格的文件名命令？

import subprocesscmdu = '''cat "./temp/1 1.txt" "./temp/1 2.txt" > "./temp/1 3.txt"'''subprocess.call(cmdu.split())

import subprocesscmdu = 'cat "./temp/1 1.txt" "./temp/1 2.txt" > "./temp/1 3.txt"'subprocess.call(cmdu.split(' '))

cat "./TEMP/1 1.txt" "./TEMP/1 2.txt" > "./TEMP/1 3.txt"