Solution solving problems with loading classes dynamically or manually, solves classloader issues in client.
from org.python.core import imp
from java.lang import Thread
Thread.currentThread().setContextClassLoader(imp.getParentClassLoader())
import sys
from org.python.core import imp
from java.lang import Thread,Class
import xml.etree.ElementTree as ET
#Thread.currentThread().setContextClassLoader(imp.getParentClassLoader())
#import imp
#print dir(imp)
#print imp.getParentClassLoader()
#print imp.getSyspathJavaLoader()
print Thread.currentThread().getContextClassLoader()
print imp.getParentClassLoader()
print imp.getSyspathJavaLoader()
#print sys.getClass().getClassLoader()
#print Thread.getClassLoader()
#print ET.__class__.getClassLoader()
root = ET.fromstring("<xml>something</xml>")
print root
print "cool"