Doesn't work on ipython notebook

[khalman-m]

I'm trying to use vowpal porpoise from my Ipython Notebook web interface
Running this code:

from vowpal_porpoise import VW
vw = VW(vw='vw_new', 
   passes=2,
   moniker='log_train.vw', 
   loss='logistic')
with vw.training():
    pass

I get this:

---------------------------------------------------------------------------
UnsupportedOperation                      Traceback (most recent call last)
<ipython-input-7-39be08ecca54> in <module>()
      3    moniker='log_train.vw',
      4    loss='logistic')
----> 5 with vw.training():
      6     pass

/usr/lib/python2.7/contextlib.pyc in __enter__(self)
     15     def __enter__(self):
     16         try:
---> 17             return self.gen.next()
     18         except StopIteration:
     19             raise RuntimeError("generator didn't yield")

/usr/local/lib/python2.7/dist-packages/vowpal_porpoise-0.3-py2.7.egg/vowpal_porpoise/vw.pyc in training(self)
    166     @contextmanager
    167     def training(self):
--> 168         self.start_training()
    169         yield
    170         self.close_process()

/usr/local/lib/python2.7/dist-packages/vowpal_porpoise-0.3-py2.7.egg/vowpal_porpoise/vw.pyc in start_training(self)
    192 
    193         # Run the actual training
--> 194         self.vw_process = self.make_subprocess(self.vw_train_command(cache_file, model_file))
    195 
    196         # set the instance pusher

/usr/local/lib/python2.7/dist-packages/vowpal_porpoise-0.3-py2.7.egg/vowpal_porpoise/vw.pyc in make_subprocess(self, command)
    264             stderr.write(command + '\n')
    265         self.log.debug('Running command: "%s"' % str(command))
--> 266         result = subprocess.Popen(shlex.split(str(command)), stdin=subprocess.PIPE, stdout=stdout, stderr=stderr, close_fds=True, universal_newlines=True)
    267         result.command = command
    268         return result

/usr/lib/python2.7/subprocess.pyc in __init__(self, args, bufsize, executable, stdin, stdout, stderr, preexec_fn, close_fds, shell, cwd, env, universal_newlines, startupinfo, creationflags)
    670         (p2cread, p2cwrite,
    671          c2pread, c2pwrite,
--> 672          errread, errwrite) = self._get_handles(stdin, stdout, stderr)
    673 
    674         self._execute_child(args, executable, preexec_fn, close_fds,

/usr/lib/python2.7/subprocess.pyc in _get_handles(self, stdin, stdout, stderr)
   1063             else:
   1064                 # Assuming file-like object
-> 1065                 errwrite = stderr.fileno()
   1066 
   1067             return (p2cread, p2cwrite,

/usr/local/lib/python2.7/dist-packages/IPython/kernel/zmq/iostream.pyc in fileno(self)
    192 
    193     def fileno(self):
--> 194         raise UnsupportedOperation("IOStream has no fileno.")
    195 
    196     def write(self, string):

UnsupportedOperation: IOStream has no fileno.