Matlab do not recongnize pyversion

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Alain1305 on 11 Jul 2015
Answered: Sudhanshu Bhatt on 22 Jul 2015
I want to use Python in Matlab. I have already installed Python and I follow the instructions on Matlab web site "getting started" The first is to use pyversion to choose the version of Python to use Matlab do not recognize pyversion
Robert Snoeberger
Robert Snoeberger on 11 Jul 2015
Walter, you are correct. pyversion is only present from R2014b onward.

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Answers (1)

Sudhanshu Bhatt
Sudhanshu Bhatt on 22 Jul 2015
Hi Alain1305,
The "pyversion" function was introduced in MATLAB R2014b and cannot be used with any prior release. MATLAB supports versions 2.7, 3.3 and 3.4 of Python.
Assuming the error occurred in MATLAB R2014b or later releases, there can be two possible reasons for this issue:
  • *Python library was installed but the executable path was not set:*In this case you can use the following commands to set the executable path:
Go to My Computer -> Properties -> Advanced -> Environment Variables and edit "Path" variable to add Python Path i.e. 'C:\<python_library>'
  • Python library is not installed: In this case reinstalling the python libraries and setting the "Path" variable might help in fixing the issue.
It might also be helpful to look at the link below describing some errors with Python integration: Undefined variable py or Function py.command
Hope this helps.
Sudhanshu Bhatt


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