Re: Issue with symbolic package on Octave 4.2.1 on windows 10 PC

[Colin Macdonald]

On 2017-10-04 12:58 PM, anoop joshi wrote:
> Hi Colin,
>
> For experiment 2 suggested by you, I followed the steps below:
>
>  1. Uninstalled the existing Python 2.7 version in my PC.
>  2. downloaded the file "symbolic-win-py-bundle-2.6.0.zip"
>  3. started Octave, change folder to where your downloads are.
>  4. typed |pkg install |"symbolic-win-py-bundle-2.6.0.zip"
>  5. typed |pkg load symbolic|
>  6. typed |syms x|
>
> But then got the error "error: Cannot run the Python executable 
> "C:\Python27\python.exe"
>      Python and SymPy are needed for most Symbolic features.
>      Is Python installed?  Is your "path" configured correctly?".
>
> Is there some other step here?

Hmmm, that is using your system python instead of the bundled one.  Not
sure why!  I guess the environment variable (or equivalent on Windows) 
is still set to "C:\Python27\python.exe")?
Its Windows, did you reboot several times between the various steps? 
(excuse sarcasm).  Specifically after uninstalling Python.

I thought the bundled package prefers its own Python to the system one 
but I might be wrong about that.

> After that I tried installing Python 3.63. CMD prompt shows the path is 
> configured ok, but still syms x doesn't run

And the error is?

Given that we think the problem might be that your Python 2.7 is too 
old, is there a more recent Python 2.7 installer for your system (like 
2.7.9 for example).  From my point of view, this is the most important 
thing to try.