wtf?

socketpair.py

import os, sys, socket, time

socket.setdefaulttimeout(10)

r,w = socket.socketpair()

def child():
    try:
        print r.recv(10)
    except socket.timeout:
        print 'noread'
    w.send('aa')        # o_O
    print r.recv(10)
    sys.exit(0)

pid = os.fork()
if pid == 0:
    child()

time.sleep(1)
w.close()

os.waitpid(pid, 0)