Why does MATLAB error with "Unable to resolve name" when trying to use Python on a Linux machine?
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On RHEL 6.5 Linux machine with Python 3.6.6 installed, I get the following error while using the "py.list" and "pyrun" command:
>> pyenv('Version', '/usr/local/pkg/python/3.6.6/bin/python3.6');
>> py.list({'hi'})
Unable to resolve name py.list.
>> pyrun("print('Hello World')")
Error using feval
Unrecognized function or variable 'py.dict'.
My MATLAB "pyenv" looks like this and I notice that the "Library" field is empty:
>> pyenv
Version: "3.6"
Executable: "/usr/local/pkg/python/3.6.6/bin/python3.6"
Library: ""
Home: "/usr/local/pkg/python/3.6.6"
Status: NotLoaded
ExecutionMode: InProcess
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MathWorks Support Team
2024-12-17
编辑：MathWorks Support Team
2023-11-16
On Linux and Mac systems, if the "Library" field is empty in the "pyenv" output, it indicates that Python was installed without the "--enable-shared" option. The Python installation was built without shared libraries enabled, so MATLAB cannot interact with CPython properly. According to this documentation, Python must be built using the "--enable-shared" option:
Please rebuild the Python executable using the "--enable-shared" option. This way MATLAB will be able to interact with Python through the shared library file, such as "libpython3.6.so.1.0".
After re-installation of Python with the build configured properly, the MATLAB Python Environment should look similar to:
>> pyenv
Version: "3.6"
Executable: "/usr/local/pkg/python/3.6.6/bin/python3.6"
Library: "libpython3.6.so.1.0"
Home: "/usr/local/pkg/python/3.6.6"
Status: NotLoaded
ExecutionMode: InProcess
Note that the "Library" field now contains the library information. And you should now be able to make calls to Python such as the following:
>> py.list({'hello', 'world'})
ans =
Python list with no properties.
['hello', 'world']
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2020-3-2
2023-11-16
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