Error using pyversion, Too many input arguments.

I want to create CoolProp in my MATLAB interface. for this, I installed Python 3.11 for window 11. After that i opened MATLAB 2023a and I typed in my MATLAB Command window: pyversion C:\Users\ASUS\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Python 3.11\python.exe

I am getting: Error using pyversion, Too many input arguments.

can anyone help me for executing the above?

thank yoy in advace for your valuable suggesion.

Answer 1

[Fangjun Jiang]

Might be the white space in the folder name? Try

pyversion("C:\Users\ASUS\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Python 3.11\python.exe")

pyversion('C:\Users\ASUS\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Python 3.11\python.exe')

By the way, it is recommended to use pyenv

https://www.mathworks.com/help/matlab/ref/pyenv.html

[Mukesh]

Hi Fangjun Jiang,

Thank you for your comment!

By using

pyversion("C:\Users\ASUS\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Python 3.11\python.exe")

it gives an error like:

Error using pyversion

Path argument does not specify a valid executable.

And after that when when we are using pyenv instead of pyversion, it also gives error

pyenv('C:\Users\ASUS\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Python 3.11\python.exe')

Error using pyenv

Invalid number of arguments.

[Fangjun Jiang]

If you look at the file under C:\Users\ASUS\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Python 3.11\, they are most likely "short cut" file, not executable. Please locate the actual .exe file.

Answer 2

[Mike Croucher]

Hi Mukesh

The pyversion command is no longer recommended. See the doc at (Not recommended) Change default version of Python interpreter - MATLAB pyversion - MathWorks United Kingdom.

It is better to use pyenv instead Change default environment of Python interpreter - MATLAB pyenv - MathWorks United Kingdom

Try this

pyenv(Version="C:\Users\ASUS\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Python 3.11\python.exe")

[Mukesh]

Hi Mike Croucher'

Thank you for your comment! I appreciate your insight and perspective.

But I tried as your comments such as: pyenv(Version="C:\Users\ASUS\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Python 3.11\python.exe")

it gives an error like:

Error using pyenv

Path argument does not specify a valid executable.

Could you please provide any additional insights or suggestions on resolving this issue?