Left Parenthesis in Ipython console result in kernel closing

[bo92wen]

Description

• What steps will reproduce the problem?
  1.Open the Spyder
  2.Type in a left parenthesis( '(' ) in the IPython console
• What is the expected output? What do you see instead?
  I expected to see a left parenthesis shown in the IPython console. I jumped to the internal console immediately and see the following information:

ERROR:tornado.general:Uncaught exception, closing connection.
Traceback (most recent call last):
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/zmq/eventloop/zmqstream.py", line 407, in _run_callback
File "/Library/Python/2.7/site-packages/tornado/stack_context.py", line 275, in null_wrapper
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/IPython/kernel/threaded.py", line 88, in _handle_recv
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/IPython/kernel/zmq/session.py", line 848, in deserialize
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/IPython/kernel/adapter.py", line 367, in adapt
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/IPython/kernel/adapter.py", line 70, in call
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/IPython/kernel/adapter.py", line 295, in inspect_reply
KeyError: 'oname'
ERROR:tornado.general:Uncaught exception, closing connection.
Traceback (most recent call last):
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/zmq/eventloop/zmqstream.py", line 433, in _handle_events
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/zmq/eventloop/zmqstream.py", line 465, in _handle_recv
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/zmq/eventloop/zmqstream.py", line 407, in _run_callback
File "/Library/Python/2.7/site-packages/tornado/stack_context.py", line 275, in null_wrapper
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/IPython/kernel/threaded.py", line 88, in _handle_recv
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/IPython/kernel/zmq/session.py", line 848, in deserialize
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/IPython/kernel/adapter.py", line 367, in adapt
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/IPython/kernel/adapter.py", line 70, in call
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/IPython/kernel/adapter.py", line 295, in inspect_reply
KeyError: 'oname'
ERROR:tornado.application:Exception in callback None
Traceback (most recent call last):
File "/Library/Python/2.7/site-packages/tornado/ioloop.py", line 840, in start
File "/Library/Python/2.7/site-packages/tornado/stack_context.py", line 275, in null_wrapper
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/zmq/eventloop/zmqstream.py", line 433, in _handle_events
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/zmq/eventloop/zmqstream.py", line 465, in _handle_recv
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/zmq/eventloop/zmqstream.py", line 407, in _run_callback
File "/Library/Python/2.7/site-packages/tornado/stack_context.py", line 275, in null_wrapper
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/IPython/kernel/threaded.py", line 88, in _handle_recv
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/IPython/kernel/zmq/session.py", line 848, in deserialize
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/IPython/kernel/adapter.py", line 367, in adapt
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/IPython/kernel/adapter.py", line 70, in call
File "/Applications/Spyder-Py2.app/Contents/Resources/lib/python2.7/IPython/kernel/adapter.py", line 295, in inspect_reply
KeyError: 'oname'

• Please provide any additional information below

Started to have this problem after upgrade Spyder to version 2.3.4.
Having been using Spyder for 9 months, no similar problem happened before this upgrade.

Version and main components

• Spyder Version: 2.3.4
• Python Version: 2.7.8
• Qt Version : 4.8.6, PyQt4 (API v2) 4.11.1 on Darwin

Optional dependencies

pyflakes >=0.5.0: 0.8.1 (OK)
pep8 >=0.6 : 1.6.2 (OK)
IPython >=1.0 : 3.0.0 (OK)
zmq >=2.1.11 : 14.5.0 (OK)
pygments >=1.6 : 2.0.2 (OK)
pandas >=0.13.1 : 0.16.0 (OK)
sphinx >=0.6.6 : 1.2.3 (OK)
psutil >=0.3 : 2.2.1 (OK)
rope >=0.9.2 : 0.10.2 (OK)
jedi >=0.8.1 : None (NOK)
matplotlib >=1.0: 1.4.3 (OK)
sympy >=0.7.3 : 0.7.6 (OK)
pylint >=0.25 : 1.4.1 (OK)

[bilderbuchi]

sounds similar to #2341

[ccordoba12]

@bo92wen, why are lines (on your error report) that start with this?

/Library/Python/2.7/site-packages

To me this indicates that: a) you're using an external interpreter, and b) there's a mismatch between your IPython versions in your interpreter and the one that comes with the Spyder app.

[ccordoba12]

Closing because of lack of further info