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

[Alois Schloegl]

On 2017-10-04 23:00, Colin Macdonald wrote:
> 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.


In my experience, python uninstaller does not completely uninstall
python but the directory
  C:\Python27
can still contains certain packages. Make sure that you really delete
the whole directory "C:\Python27". And continue then.

   Alois


>>  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.
> 
> 
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