Experimental Physics and
Industrial Control System

I want that my pv should be read and printed continuously. I have written below python code :

from org.csstudio.opibuilder.scriptUtil import PVUtil
import os,sys
import subprocess
import glob
from os import path
from datetime import datetime
while True:
pv=PVUtil.getDouble(pvs[1])
i = datetime.now()
sys.stdout=open("test2.txt","wb")
print str(i), pv '\\n'
sys.stdout.close()