Bug during integration of IPython console in Qt application

[rossant]

I have a PyQt application that integrates an IPython Qt console widget. It was working fine until now (I recently updated IPython to master). I'm not sure what's going on. The code is here.

======================================================================
ERROR: klustaviewa.views.tests.test_ipythonview.test_ipythonview
----------------------------------------------------------------------
Traceback (most recent call last):
  File "P:\WinPython-64bit-2.7.5.3\python-2.7.5.amd64\lib\site-packages\nose\cas
e.py", line 197, in runTest
    self.test(*self.arg)
  File "D:\Git\klustaviewa\klustaviewa\views\tests\test_ipythonview.py", line 36
, in test_ipythonview
    window = show_view(IPythonView, **kwargs)
  File "D:\Git\klustaviewa\klustaviewa\views\tests\utils.py", line 137, in show_
view
    window = show_window(TestWindow)
  File "D:\Git\qtools\qtools\utils.py", line 28, in show_window
    window = window(**kwargs)
  File "D:\Git\klustaviewa\klustaviewa\views\tests\utils.py", line 90, in __init
__
    self.view = view_class(self, getfocus=False)
  File "D:\Git\klustaviewa\klustaviewa\views\ipythonview.py", line 44, in __init
__
    self.control.kernel_client = self.kernel_client
  File "d:\git\ipython\IPython\qt\base_frontend_mixin.py", line 64, in kernel_cl
ient
    self._started_channels()
  File "d:\git\ipython\IPython\qt\console\ipython_widget.py", line 280, in _star
ted_channels
    self.kernel_client.kernel_info()
AttributeError: 'QtInProcessKernelClient' object has no attribute 'kernel_info'
-------------------- >> begin captured logging << --------------------

IPython.kernel.inprocess.ipkernel: DEBUG:
*** MESSAGE TYPE:execute_request***
IPython.kernel.inprocess.ipkernel: DEBUG:    Content: {'code': u'', 'silent': Tr
ue, 'user_variables': [], 'store_history': True, 'user_expressions': {}, 'allow_
stdin': True}
   --->

IPython.kernel.inprocess.ipkernel: DEBUG: {'parent_header': {'date': datetime.da
tetime(2014, 2, 5, 11, 41, 15, 331000), 'username': 'username', 'session': '8c95
6882-0a88-424b-9388-fb77fef5e792', 'msg_id': '86a7a466-45ad-4bdb-93ba-f33e1bd340
b9', 'msg_type': 'execute_request'}, 'msg_type': u'execute_reply', 'msg_id': '7e
9b1242-88b4-4ad3-b7df-eb199b045cea', 'content': {'status': u'ok', 'execution_cou
nt': 0, 'user_variables': {}, 'payload': [], 'user_expressions': {}}, 'header':
{'date': datetime.datetime(2014, 2, 5, 11, 41, 15, 338000), 'username': u'userna
me', 'session': u'49828235-6b29-4ba1-81fe-3e4184b15830', 'msg_id': '7e9b1242-88b
4-4ad3-b7df-eb199b045cea', 'msg_type': u'execute_reply'}, 'tracker': <zmq.sugar.
tracker.MessageTracker object at 0x0000000012B45C50>, 'metadata': {'dependencies
_met': True, 'engine': u'39a05a32-a60f-49a5-b02d-74c0b3cd7212', 'status': u'ok',
 'started': datetime.datetime(2014, 2, 5, 11, 41, 15, 337000)}}
--------------------- >> end captured logging << ---------------------

----------------------------------------------------------------------
Ran 1 test in 0.323s

FAILED (errors=1)

[takluyver]

Can you give #5039 a try?

[pradal]

I have the same problem and the #5039 is not sufficient.
The method kernel_info in the class InProcessShellChannel is not implemented.
It works well if I add the method:

def kernel_info(self):
    """Request kernel info."""
    msg = self.client.session.msg('kernel_info_request')
    self._dispatch_to_kernel(msg)
    return msg['header']['msg_id']

[takluyver]

Sorry, I didn't test that out properly before opening the PR. I'll add @pradal's method.

[takluyver]

OK, I've added that, and Travis is happy with me again. Can you give it another try?

[rossant]

Thanks, it works!