TypeError: unbound method must be called with class instance 1st argument

[void.no.spam.com at gmail.com]

I'm a novice at Python, and found some code samples on how to use
threads.  My script is being run by a product that contains a Jython
interpreter.  Can someone please explain why I get the following error:

Traceback (innermost last):
  File "/full/path/to/file/GenerateData.py", line 104, in ?
  File "/full/path/to/file/GenerateData.py", line 34, in __init__
TypeError: unbound method must be called with class instance 1st
argument


Here are the important pieces of my GenerateData.py script.  Note that
"scriptinterface" is something provided by the product to allow my
script to interface with it.  Line 104 is the last line -- the one that
creates a GenThread and calls start() on it.


import sys

# need this section otherwise the import random won't work
if sys.path.count('/usr/local/lib/python2.2/') == 0:
    sys.path.append('/usr/local/lib/python2.2/')

import random
import time
import threading

from java.lang import String
from jarray import array

class GenThread(threading.Thread):
    def __init__(self, ipAddress, port):
        threading.Thread.__init__()
        self.ipAddress = ipAddress
        self.port = str(port)

    def run(self):
        #
        # code
        #

GenThread(scriptinterface.getSnmpIPAddress(),
scriptinterface.getSnmpPort()).start()