如何在python中获取matlab脚本的输出 [英] How to get the output of a matlab script in python

问题描述

我正在通过python执行matlab计算.为此，我使用以下命令:

I am performing a matlab calculation through python. For this purpose, I use the following command:

retcode=subprocess.call["matlab","-nosplash","nodesktop","-wait","-r","run('matlabscript.m')","quit;"])

通过在python中运行此命令行，将打开一个matlab会话，我可以开始执行上述脚本'matlabscript.m'.有没有办法将此脚本的执行结果输出到python中? retcode，除非包含单个数字，否则不包含任何内容.我尝试使用subprocess.check_output代替，但是我什么也没得到.基本上，当我执行上述代码时，将创建并指定案例名称.

by running this command line in python, a matlab session opens and I can start to execute the aforementioned script 'matlabscript.m'. Is there a way to get the output of the execution of this script into python? retcode, does not contain anything unless a single number. I have tried to use subprocess.check_output instead, but I cannot get anything. Basically, when I execute the aforementioned sript a casename is going to be created and specified.

推荐答案

我建议您使用Popen.我没有matlab，因此无法测试您的确切命令，但是请尝试以下操作:

I suggest you use Popen. I don't have matlab, so I can't test your exact command, but try this:

import subprocess

cmd = ["matlab", "-nosplash", "no desktop", "-wait", "r", "run('matlabscript.m')","quit;"]

proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(output, error) = proc.communicate()

if error:
    print "error:", error

print "output:", output

# if you need this:
retcode = proc.returncode

如果产生大量输出，则可能会崩溃，这是只有您才能做出的判断.

If a huge amount of output is produced then this could potentially crash, its a judgement only you can make.

请注意，subprocess.communicate()也用于stdin.

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