gistfile1.py

import select
import zmq

ctx = zmq.Context()

requester = ctx.socket(zmq.REQ)
replyer = ctx.socket(zmq.REP)

replyer.bind("inproc://testology")
requester.connect("inproc://testology")

print "replyer events:", replyer.getsockopt(zmq.EVENTS)

print "sending request"
requester.send("howdy!")

print "replyer polling..."
select.select([replyer.getsockopt(zmq.FD)], [], [], 3)
print "poll returned"

print "replyer events:", replyer.getsockopt(zmq.EVENTS)
replyer.recv()

replyer.send("a response")
requester.recv()

print "\n"

# this time without a getsockopt(EVENTS) beforehand
requester.send("hello again")

print "replyer polling..."
select.select([replyer.getsockopt(zmq.FD)], [], [], 3)
print "poll returned"