Win64, change python version after install

[Sergey]

Hi All,
I installed STAF with "default" 2.5 python support. How can i change this to 2.7 w/o reinstall?
Thanks.

[Sharon Lucas]

You can easily change which STAF Python library version you want to use on Windows by copying the STAF Python library file for that version to {STAF/Config/STAFRoot}/bin. For example, if STAF is installed at C:\STAF and you want Python 2.7 support:

copy C:\STAF\bin\python27\PYSTAF.pyd C:\STAF\bin\PySTAF.pyd

This is talked about in section "3.0 Installation" in the STAF Python User's Guide at http://staf.sourceforge.net/current/STAFPython.htm#Header_Install.

And to configure STAF Python support on Windiows, add the C:\STAF\bin directory to your environment variable, assuming you installed STAF to directory C:\STAF. For example:

set PYTHONPATH=C:\STAF\bin;%PYTHONPATH%

[Sergey]

Actually, i did copy (and did the fresh install afterwords), then run the following command inside STAX:
<script>
import sys
print sys.version
</script>

This is the output:

20170213-19:25:23 Info 2.5.2 (Release_2_5_2:7206, Mar 2 2011, 23:12:06)
[IBM J9 VM (IBM Corporation)]

So, if this another "python"?

[Sergey]

Ok, looks like i mixed things up. STAX uses embedded Jython (2.5) and STAF can do nothing about that. Correct?

[Sharon Lucas]

Right. The STAF Python libraries are not related to the version of Jython that is provided with STAX.

There is a feature open "#739: Update STAX to use Jython 2.7" at https://sourceforge.net/p/staf/feature-requests/739/. However, I haven't had time to work on this more. You could build STAX yourself to use Jython 2.7.(Note: Jython 2.7 requires STAX to be built with Java 6 or later). The STAF Developer's Guide talks about how to build STAX at http://staf.sourceforge.net/current/stafdg.html.

[Sergey]

Understood, thanks!