rosinit error in 2022b on Linux

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鑫
鑫 2022-11-26
评论： Karthik Reddy Vennapureddy 2022-12-12
Hi,
I just installed the ROS toolbox in Matlab2022b in Ubuntu18.04, and type rosinit in the command window.
But it shows that:
Launching ROS Core...
Path to Python Executable is not set. Set the path to the Python executable using ROS Toolbox preferences.
Then I choose python3.9 in ROS Toolbox preferences.
But it told me that:
Invalid Python Version 3.9.15.Supported Python Version is 3.9.x.
Could anyone help me on figuring out this issue?
Thank you so much

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回答（1 个）

Jagadeesh Konakalla
Jagadeesh Konakalla 2022-11-28
The error is confusing and our team is working to fix this issue. Can you please install 3.9.13 and try it? It will work.
Thanks,
Jagadeesh K
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鑫
鑫 2022-12-12
I just reinstalled python, but it seems useless. And I can't check out what's wrong. It's so weirdly.
Karthik Reddy Vennapureddy
Karthik Reddy Vennapureddy 2022-12-12
Hi Jestzer,
Could you please provide the command you executed to install python? Regarding the above error:
ModuleNotFoundError: no module named '_ctypes'. Looks like libff-dev is not installed in your pc. Could you install libffi-dev using this command : sudo apt-get install libffi-dev
After installing libffi-dev, try rerunning 'ros.internal.createOrGetLocalPython(true)' and see if it works fine.
Thanks,
Karthik Reddy

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