Calling matlab.eng​ine.connec​t_matlab() twice freezes Python

3 次查看（过去 30 天）
Rob Campbell
Rob Campbell 2023-1-28
评论： Rob Campbell 2023-1-30
I can connect to a named running MATLAB session from Python with:
In [8]: matlab.engine.connect_matlab('MY_SESSION')
But if I call it a second time Python hangs for about a minute before finally saying it can not connect
In [8]: matlab.engine.connect_matlab('MY_SESSION')
Out[8]: <matlab.engine.matlabengine.MatlabEngine at 0x1648f46a370>
In [9]: matlab.engine.connect_matlab('MY_SESSION')
...
EngineError: Unable to connect to MATLAB session 'MY_SESSION'.
I can not find a way of testing if MY_SESSION already exists. I also can not find a way to close a connection that already exists in a different scope. Are those things possible?

请先登录，再回答此问题。

回答（1 个）

Chris
Chris 2023-1-29
编辑：Chris 2023-1-29
names = matlab.engine.find_matlab()
if 'MY_SESSION' in names:
eng = matlab.engine.connect_matlab('MY_SESSION')
You can del(eng) to close the connection in the present scope, but I'm not sure about forcing it closed from somewhere else.
Since Matlab takes a bit to do its thing, connecting/reconnecting will sometimes throw an error. You might use a try/except or a while loop to handle the error in a python script/program.
  5 个评论
显示 3更早的评论
Chris
Chris 2023-1-30
编辑：Chris 2023-1-30
Then if the variable is present, the connection is there. Make a function that tests that condition before connecting.
Rob Campbell
Rob Campbell 2023-1-30
We are getting side tracked now.
I want a way to test whether the connection has been made and it looks like that does not exist.
Thanks for trying, though.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Call MATLAB from Python 的更多信息

标签

产品


版本

R2022b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by