Matlab won't run python

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Kamala Clark-Swanson
Kamala Clark-Swanson 2015 年 9 月 15 日
コメント済み: Sarvagya 2022 年 7 月 20 日
I call my function and get undefined variable "py" or function "py.sys.path" I enter pyversion and it returns version: ' ' I verified in Add Path that my function paths are correctly listed. And Which -all Python.exe returns the correct path. I have installed this many times but Matlab version 2015a simply won't run my function. I have 64 bit Matlab and 64 bit python and Windows 7 64bit.

回答 (2 件)

Robert Snoeberger
Robert Snoeberger 2015 年 9 月 15 日
編集済み: Robert Snoeberger 2015 年 9 月 16 日
If pyversion returns '', then MATLAB doesn't know where to find your Python installation. You should call pyversion with the path to the python executable [1]. For example, if the executable is located at C:\Python27\python.exe, then call pyversion as follows:
>> pyversion C:\Python27\python.exe
  6 件のコメント
Bo Li
Bo Li 2018 年 12 月 20 日
編集済み: madhan ravi 2018 年 12 月 20 日
Most likely your Python build is statically linked. Python Interface needs the shared library of Python in order to run Python code in MATLAB process. And this is clearly documented:
On Linux® and Mac systems, if you build the Python executable, configure the build with the --enable-shared option.


Paul Thomas
Paul Thomas 2019 年 2 月 13 日
I first wanted to test if it works in general on my machine and followed the instructions in this video: I then got the error "Undefined variable "py" or "class" ...".
This issue was cased by the fact that I had two versions of python installed. One by default from the MAC and Anaconda, which I installed myself. Matlab automatically identified the default version, but using the terminal it only recognized the newer Anaconda version.
So I used the terminal, entered "which python", which showed the path of the Anaconda version and then changed the connected version in Matlab using "pyversion path" and it worked.
I am using macOS Mojave Version 10.14.3 . There might be another way to get the path info, but I am not really familiar with MAC just forced to use it for work.
  3 件のコメント
Sarvagya 2022 年 7 月 20 日
This worked. Thanks



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