Unable to resolve py.sys.path

Question

Max Salter 2023-7-26

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2001032-unable-to-resolve-py-sys-path

回答： Sanjana 2023-8-22

I am trying to call a Python function from a MATLAB script, but no matter what function I call I get the error 'Unable to resolve the name py.function'. This includes when I run py.sys.path, I get the error 'Unable to resolve the name py.sys.path'. When I call pyenv, I get:

>> pyenv
ans = 
  PythonEnvironment with properties:
          Version: "3.10"
       Executable: "C:\Users\maxml\AppData\Local\Microsoft\WindowsApps\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\python.exe"
          Library: "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.3056.0_x64__qbz5n2kfra8p0\python310.dll"
             Home: "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.3056.0_x64__qbz5n2kfra8p0"
           Status: NotLoaded
    ExecutionMode: OutOfProcess

My ultimate goal is just to call a Python function from within a MATLAB script. What could be causing this behavior? Thank you in advance!

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Al Danial 2023-7-30

Which version of matlab? The matlab and Python versions need to match per https://www.mathworks.com/support/requirements/python-compatibility.html

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Answer 1

Sanjana 2023-8-22

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2001032-unable-to-resolve-py-sys-path#answer_1291387

Hi Max,

I understand that you are facing an issue in calling a Python function from a MATLAB Script.As per the steps mentioned in the below documentation, the “Unable to resolve the name py.function” error occurs when the location of custom defined module containing the Python function is not added in the Python path or when the Python path itself is not added properly. To provide the path to the Python executable, use the “pyenv”.

Please refer to the following documentation for adding Python path,

https://www.mathworks.com/help/matlab/matlab_external/undefined-variable-py-or-function-py-command.html

Please refer to the following link, for further information on adding the Python module location in the Python path,

https://www.mathworks.com/matlabcentral/answers/1466389-why-do-i-receive-an-error-unable-to-resolve-the-name-py-modulename-when-using-the-python-interfa

Hope this helps.

Regards,

Sanjana.