Import Python Pyvisa Module in Sikuli

Question

I am running sikuli script on a computer that automates data acquisition for some of my instruments. I have recently installed PyVisa and i am able to connect and communicate with my instruments using python without any issues. Is there a way i can import the Visa module in sikuli and use it to communicate with my instruments the same way as i would in python ?

Answer 1

Sikuli uses Jython to run. Pure-Python code will (almost always) work normally, but Python code with native C code will not work. I'm not familiar with PyVISA, but it looks like pure Python, so I'd give it a try.

You'll need to put PyVISA somewhere that Jython looks. Take a look at the Jython documentation.

Answer 2

I was trying to import a Python Library: jenkinsapi into the Jython Sikuli environment. After several attempts to combine the two the best solution I came up with involved the following:

From within your Sikuli Editor import os, and define a function to run the code you cant import into Jython.

import os

def installBuild():
    os.system("C:\\Users\\time\\Desktop\\FDSmokeTest\\fdoc_build.py")

Python is able to access the jenkinsapi but Jython is unable, creating a simple python file then having your Sikuli Jython code execute a system call to run the Python.

from jenkinsapi.jenkins import *
import os
import unittest
import sys
from subprocess import call

def getSCMInfroFromLatestGoodBuild(url, jobName, username=None, password=None):
    print "Getting Latest Good Build: http://addresstoourjenkins.com:9087 Job: Daily_Windows"
    J = Jenkins(url, username, password)
    job = J[jobName]
    lgb = job.get_last_good_build()
    print "Latest Good Daily Windows Build: " + str(lgb)
    return lgb

def installBuild(buildnum):
    print "Installing " + buildnum + " wait a few minutes while installation completes"
    os.system("C:\Users\time\Desktop\FDSmokeTest\install.bat " + buildnum)

if __name__ == '__main__':
    temp = getSCMInfroFromLatestGoodBuild('http://addresstoourjenkins.com:9087', 'Daily_Windows')
    buildnum=str(temp).replace('Daily_Windows ', '')
    installBuild(buildnum)