BUG: Multiple incompatible subclass instances of ZMQInteractiveShell are being created about ipykernel HOT 9 CLOSED

$ ipython
Python 2.7.10 |Continuum Analytics, Inc.| (default, Oct 19 2015, 18:31:17) 
Type "copyright", "credits" or "license" for more information.

IPython 4.0.0 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.

In [1]: from ipykernel.datapub import publish_data

In [2]: import numpy as np

In [3]: myarr = np.ones(2 * 1024 * 1024 * 1024 * 8 // 64)

In [4]: publish_data({'x': myarr})
---------------------------------------------------------------------------
MultipleInstanceError                     Traceback (most recent call last)
<ipython-input-4-49f20562eb3f> in <module>()
----> 1 publish_data({'x': myarr})

/zopt/conda/envs/nanshenv/lib/python2.7/site-packages/ipykernel/datapub.pyc in publish_data(data)
     55     """
     56     from ipykernel.zmqshell import ZMQInteractiveShell
---> 57     ZMQInteractiveShell.instance().data_pub.publish_data(data)

/zopt/conda/envs/nanshenv/lib/python2.7/site-packages/traitlets/config/configurable.pyc in instance(cls, *args, **kwargs)
    389             raise MultipleInstanceError(
    390                 'Multiple incompatible subclass instances of '
--> 391                 '%s are being created.' % cls.__name__
    392             )
    393 

MultipleInstanceError: Multiple incompatible subclass instances of ZMQInteractiveShell are being created.

$ jupyter console
Jupyter Console 4.0.3

[ZMQTerminalIPythonApp] Loading IPython extension: storemagic
[ZMQTerminalIPythonApp] Loading IPython extension: h5py.ipy_completer

In [1]: from ipykernel.datapub import publish_data

In [2]: import numpy as np

In [3]: myarr = np.ones(2 * 1024 * 1024 * 1024 * 8 // 64)

In [4]: publish_data({'x': myarr})
Traceback (most recent call last):
  File "/zopt/conda/envs/nanshenv/bin/jupyter-console", line 5, in <module>
    app.main()
  File "/zopt/conda/envs/nanshenv/lib/python2.7/site-packages/jupyter_core/application.py", line 267, in launch_instance
    return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
  File "/zopt/conda/envs/nanshenv/lib/python2.7/site-packages/traitlets/config/application.py", line 592, in launch_instance
    app.start()
  File "/zopt/conda/envs/nanshenv/lib/python2.7/site-packages/jupyter_console/app.py", line 155, in start
    super(ZMQTerminalIPythonApp, self).start()
  File "/zopt/conda/envs/nanshenv/lib/python2.7/site-packages/IPython/terminal/ipapp.py", line 353, in start
    self.shell.mainloop()
  File "/zopt/conda/envs/nanshenv/lib/python2.7/site-packages/jupyter_console/interactiveshell.py", line 420, in mainloop
    self.interact(display_banner=display_banner)
  File "/zopt/conda/envs/nanshenv/lib/python2.7/site-packages/jupyter_console/interactiveshell.py", line 588, in interact
    self.run_cell(source_raw)
  File "/zopt/conda/envs/nanshenv/lib/python2.7/site-packages/jupyter_console/interactiveshell.py", line 174, in run_cell
    self.handle_iopub(msg_id)
  File "/zopt/conda/envs/nanshenv/lib/python2.7/site-packages/jupyter_console/interactiveshell.py", line 262, in handle_iopub
    sub_msg = self.client.iopub_channel.get_msg()
  File "/zopt/conda/envs/nanshenv/lib/python2.7/site-packages/jupyter_client/blocking/channels.py", line 55, in get_msg
    return self._recv()
  File "/zopt/conda/envs/nanshenv/lib/python2.7/site-packages/jupyter_client/blocking/channels.py", line 41, in _recv
    msg = self.socket.recv_multipart(**kwargs)
  File "/zopt/conda/envs/nanshenv/lib/python2.7/site-packages/zmq/sugar/socket.py", line 361, in recv_multipart
    part = self.recv(flags, copy=copy, track=track)
  File "zmq/backend/cython/socket.pyx", line 676, in zmq.backend.cython.socket.Socket.recv (zmq/backend/cython/socket.c:6507)
  File "zmq/backend/cython/socket.pyx", line 710, in zmq.backend.cython.socket.Socket.recv (zmq/backend/cython/socket.c:6307)
  File "zmq/backend/cython/socket.pyx", line 147, in zmq.backend.cython.socket._recv_copy (zmq/backend/cython/socket.c:1877)
  File "zmq/backend/cython/checkrc.pxd", line 19, in zmq.backend.cython.checkrc._check_rc (zmq/backend/cython/socket.c:6920)
    raise Again(errno)
Again: Resource temporarily unavailable

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