Opening console for notebook without kernel yields an error

[ccordoba12]

@rebelclause commented on Thu Jul 26 2018

Description

What steps will reproduce the problem?

From an open notebook, right click the containing widget's tab and select 'open console'.

This error pops up.

Traceback

  File "/home/tim/.local/lib/python3.6/site-packages/spyder_notebook/notebookplugin.py", line 424, in open_console
    None)
  File "/home/tim/.local/lib/python3.6/site-packages/spyder/plugins/ipythonconsole.py", line 1716, in _create_client_for_kernel
    cf_path = osp.dirname(connection_file)
  File "/usr/lib/python3.6/posixpath.py", line 156, in dirname
    p = os.fspath(p)
TypeError: expected str, bytes or os.PathLike object, not NoneType

Versions

• Spyder version: 3.3.0
• Python version: 3.6.5
• Qt version: 5.9.3
• PyQt5 version: 5.9.2
• Operating System: Linux 4.15.0-29-generic

Dependencies

pyflakes >=0.6.0  :  2.0.0 (OK)
pycodestyle >=2.3 :  2.4.0 (OK)
pygments >=2.0    :  2.2.0 (OK)
sphinx >=0.6.6    :  1.7.6 (OK)
rope >=0.9.4      :  0.10.7 (OK)
jedi >=0.9.0      :  0.12.1 (OK)
psutil >=0.3      :  5.4.6 (OK)
nbconvert >=4.0   :  5.3.1 (OK)
pandas >=0.13.1   :  None (NOK)
numpy >=1.7       :  None (NOK)
sympy >=0.7.3     :  1.2 (OK)
cython >=0.21     :  0.28.4 (OK)
qtconsole >=4.2.0 :  4.3.1 (OK)
IPython >=4.0     :  6.4.0 (OK)
matplotlib >=2.0.0:  None (NOK)
pylint >=0.25     :  2.0.1 (OK)

---

@ccordoba12 commented on Thu Jul 26 2018

Moving to the right repo.

[ccordoba12]

@rebelclause, we'll try to update spyder-notebook to work with Spyder 3.3+ during the next weeks.

[jitseniesen]

I can reproduce the error message. Open a notebook, shutdown the kernel (in the notebook menu embedded in HTML, click Kernel > Shutdown) and the open a console (Open console in the notebook options menu). We should catch this situation.

[ccordoba12]

Ok, then we should check first if the current notebook has an associated kernel and open a console connected to it.

Else we need to inform users about it with a QMessage.