importing psspy module in a python sript

asked 2014-04-28 17:12:33 -0500

Anonymous

updated 2014-05-29 14:42:06 -0500

jsexauer

586 ●4 ●11 ●18

I use the code

import os,sys

PSSE_LOCATION = r"D:\COMPONENTE_LOGICA\PSSE\PSSE30\PSSBIN"

sys.path.append(PSSE_LOCATION)

os.environ['PATH'] = os.environ['PATH'] + ';' +  PSSE_LOCATION 

import psspy

And I get this:

Traceback (most recent call last): File "<console>", line 1, in <module> File ".\psspy.py", line 56, in <module> ImportError: DLL load failed: it is not a valid win32 program

I checkeed the PSSE bin folder and I could not find a psspy.dll. There is a psspyc.pyd. Is the psspy.dll missing? Where can I get one?

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Comments

The code looks fine (except for a missing underscore in the first mention of "PSSELOCATION"). Are you using Python 2.3? I haven't tried to call PSSE like this prior to v31. Do you have access to a newer version of PSSE?

Eli Pack ( 2014-04-29 22:38:34 -0500 )edit

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answered 2014-05-28 15:25:45 -0500

NOC
1

Hi everybody,

I'm using a PSS/E version 32 and in my python programs use the following code:

import os,sys

Path definition to include in the searching paths for the sys library

PATHPSSEINSTALLATION="C:\Program Files (x86)\PTI\PSSE32\PSSBIN" PATHLOCALPROGRAM="D:\MyProgram"

Add path definition to the paths used by sys library

sys.path.append(PATHPSSEINSTALLATION) sys.path.append(PATHLOCALPROGRAM) os.environ['PATH']=os.environ['PATH']+";"+PATHPSSEINSTALLATION

I hope the code be useful for you.

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answered 2014-05-14 23:49:43 -0500

yfwing
426 ●2 ●3 ●8

Are you using Version 30 or new version? For the version 30 or earlier, it should not use psspyc.pyd. In the PSSBIN folder, you should be able to find a file named psspyc.dll. For version 31 or newer, it uses psspyc.pyd. For the newer release, it has some bugs with win32 compatibility. Upgrade your PSS/E to the Version 33.4, which resolves most of the compatibility issues.