A sample ZMQ 3.x Python pub/sub example.

gistfile1.txt

import zmq

def publisher():
  c=zmq.Context()
  s=c.socket(zmq.PUB)
  s.bind('tcp://127.0.0.1:1234')
  s.send("foobie")

def subscriber():
  c=zmq.Context()
  s=c.socket(zmq.SUB)
  s.setsockopt(zmq.SUBSCRIBE,'')
  s.connect('tcp://127.0.0.1:1234')
  print s.recv()

def request():
  c=zmq.Context()
  s=c.socket(zmq.REQ)
  s.connect('tcp://127.0.0.1:1234')
  s.send("ack")
  print s.recv()

def reply():
  c=zmq.Context()
  s=c.socket(zmq.REP)
  s.bind('tcp://127.0.0.1:1234')
  print s.recv()
  s.send("bar")