Error while restarting kernel

[bcolsen]

Issue Report Checklist

• Searched the issues page for similar reports
• Read the relevant sections of the Spyder Troubleshooting Guide and followed its advice
• Reproduced the issue after updating with conda update spyder (or pip, if not using Anaconda)
• Could not reproduce inside jupyter qtconsole (if console-related)
• Tried basic troubleshooting (if a bug/error)
  • Restarted Spyder
  • Reset preferences with spyder --reset
  • Reinstalled the latest version of Anaconda
  • Tried the other applicable steps from the Troubleshooting Guide
• Completed the Problem Description, Steps to Reproduce and Version sections below

Problem Description

When I restart my kernel I get this error:

Traceback (most recent call last):
  File "/home/user/spyder/spyder/plugins/ipythonconsole/plugin.py", line 1661, in restart_kernel
    stderr = self.get_stderr_file_handle(stderr_file)
AttributeError: 'IPythonConsole' object has no attribute 'get_stderr_file_handle

I think there shouldn't be a self in there. But when I fixed that, then I get:

Traceback (most recent call last):
  File "/home/bcolsen/spyder/spyder/plugins/ipythonconsole/plugin.py", line 1663, in restart_kernel
    client.restart_kernel(stderr=stderr)
TypeError: restart_kernel() got an unexpected keyword argument 'stderr'

client.restart_kernel doesn't have any args so I'm not sure what this code is supposed to do.

I think #7829 was the last PR in this section.

What steps reproduce the problem?

1. restart the kernel

What is the expected output? What do you see instead?

doesn't restart

Paste Traceback/Error Below (if applicable)

Traceback (most recent call last):
  File "/home/user/spyder/spyder/plugins/ipythonconsole/plugin.py", line 1661, in restart_kernel
    stderr = self.get_stderr_file_handle(stderr_file)
AttributeError: 'IPythonConsole' object has no attribute 'get_stderr_file_handle

Versions

• Spyder version: 4.0.0.dev0 (Commit: 39245fb)
• Python version: 3.6.5 64-bit
• Qt version: 5.9.4
• PyQt version: 5.9.2
• Operating System name/version: Linux

Dependencies

pygments >=2.0    :  2.2.0 (OK)
sphinx >=0.6.6    :  1.7.5 (OK)
psutil >=0.3      :  5.4.6 (OK)
pyls >=0.19.0     :  0.19.0 (OK)
nbconvert >=4.0   :  5.3.1 (OK)
pandas >=0.13.1   :  0.23.1 (OK)
numpy >=1.7       :  1.14.5 (OK)
sympy >=0.7.3     :  1.1.1 (OK)
cython >=0.21     :  0.28.3 (OK)
qtconsole >=4.2.0 :  4.3.1 (OK)
IPython >=4.0     :  6.4.0 (OK)
matplotlib >=2.0.0:  2.2.2 (OK)
pylint >=0.25     :  1.9.2 (OK)

[ccordoba12]

I don't understand why our tests didn't detect this regression. But I'll fix it today for sure.

[bcolsen]

I had a look at the test. It looks like it only covers Client.restart_kernel which work fine.

[ccordoba12]

I see, so we need to test also at the plugin level.

Since I was the one who wrote that test, shame on me ;-p