running python script in matlab

Hi, I have one python script and i want to execute that in matlab.I tried with system in matlab. s=system('python trail.py 3') while excuting this command i'm getting a error like below. 'python' is not recognized as an internal or external command, operable program or batch file. Please can anybody help me in fixing this error. Thanks in advance

Regards Vasavi

Answer 1

Either python is not installed in your system or it is not on your MS Windows PATH as known to MATLAB.

Inside MATLAB, command

   getenv('PATH')

and see what it shows.

Note: python is not automatically installed as part of MATLAB. perl is, though, installed as part of MATLAB.

Hello walter, Thanks for your response.I added python path to MS windows PATH.By adding this path that error got clear.Now,when I run the command like s=system("mypython.py"); this command just opening the corresponding python file but it is not executing in matlab. Actually,the requirement is I have created one function in python.I want to pass arguments to that function from matlab and saving the function output in matlab workspace. for illustration i have a function in python like in python environment define squared(x): y=x*x return y In Matlab environment, Squared(3) 9 Please help me in solving this. Regards Vasavi

One way of proceeding (I think) would be to use MS Windows facilities to "associate" the .py file extension with the python interpreter.

Another way would be to specify the python interpreter as the command, and use whatever flags python uses in order to indicate that what follows is the name of the script to execute. For example it might look like

s = system('python -f mypython.py');

I am not familiar with python's argument-passing mechanisms; I know some other people around have used python so one of them might know.

Thanks for your comment Walter. I am also new to this python.Please share any information regarding this request if any.I searched in google but i did n't get any solution to solve this.

http://docs.python.org/tutorial/interpreter.html#invoking-the-interpreter

Thus for example

arg1 = 'C:\TEMP\MyInputFile.txt';
s = system( sprintf('python mypython.py "%s"', arg1) );

Thanks for your response Walter.That issue is resolved.Now I am able to run that python function in matlab and saving the putput in workspace. I developed the code which can do the sam ehow perl functions are executed in matlab environment. Anyhow thanks for your help.