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

From: anoop joshi
Subject: Re: Issue with symbolic package on Octave 4.2.1 on windows 10 PC
Date: Thu, 5 Oct 2017 01:28:38 +0530

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 ""
  3. started Octave, change folder to where your downloads are.
  4. typed pkg install ""
  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?

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



On Wed, Oct 4, 2017 at 5:32 PM, anoop joshi <address@hidden> wrote:
Hi Colin,

Thanks a lot for the help, I will perform the experiments suggested by you


On Oct 4, 2017 1:24 PM, "Colin Macdonald" <address@hidden> wrote:
On 2017-10-04 12:22 AM, anoop joshi wrote:
Hi Colin,

Thanks for the reply. I've been using the GUI itself

I see!  This is strange.

1.  Could it be a bug in an older Python 2.7, I notice the date is 2010.  We have tested with 2.7.9.  I'm not sure what the minimum version is...  This is my current best guess at what is happening here.

2.  Have you also tried the bundle as suggested in my original email? It uses its own bundled copy of Python 2.7.9.

3.  Can you test with Python 3?

I've filed a bug about this:

It would be really great if you can help us narrow it down by testing the two combinations above.


Anoop Joshi Veliyath
Senior Design Engineer
Cadence Design Systems, Inc.

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