IPython console errors in macOS 10.14 (Mojave)

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)
• 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

Example first and described below the screenshot

In [1] shows an example when pwd is understood as python variable, not the UNIX command. As the number (1) indicates, this is the very first thing I typed on the console after turning on spyder. In [2] shows an example when the code is not ending after hitting return key for several times (more than 1 sec interval) Also, spyder IPython console is sometimes extremely slow (e.g., declaring a variable takes few seconds).

These happen very randomly. Sometimes, I have to reopen spyder and it works fine for a while, but it gets like this again after executing few lines.

I am using OS X 10.14 (Mojave), spyder 3.3.1, Python 3.6.6, and IPython 7.0.1. None of the above issues appear when I use IPython on terminal. Also I hadn’t experienced these problems when I used OS X 10.13, Windows 10 and Ubuntu 16.04 (until ~1-2 weeks ago). So I am guessing there is something when I use spyder on Mojave…?

What steps reproduce the problem?

Described above

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

Described above

Paste Traceback/Error Below (if applicable)

Described above

Versions

• Spyder version: 3.3.1
• Python version: 3.6.6
• Qt version: 5.9.6
• PyQt version: 5.9.2
• Operating System name/version: OS X 10.14 Mojave

Dependencies

IPython >=4.0     :  7.0.1 (OK)
cython >=0.21     :  0.28.5 (OK)
jedi >=0.9.0      :  0.12.1 (OK)
matplotlib >=2.0.0:  3.0.0 (OK)
nbconvert >=4.0   :  5.3.1 (OK)
numpy >=1.7       :  1.15.2 (OK)
pandas >=0.13.1   :  0.23.4 (OK)
psutil >=0.3      :  5.4.7 (OK)
pycodestyle >=2.3 :  2.4.0 (OK)
pyflakes >=0.6.0  :  2.0.0 (OK)
pygments >=2.0    :  2.2.0 (OK)
pylint >=0.25     :  2.1.1 (OK)
qtconsole >=4.2.0 :  4.4.1 (OK)
rope >=0.9.4      :  0.11.0 (OK)
sphinx >=0.6.6    :  1.8.1 (OK)
sympy >=0.7.3     :  1.3 (OK)

[ccordoba12]

So I am guessing there is something when I use spyder on Mojave…?

I think this is an issue with the latest IPython/ipykernel combo. Please close Spyder, open Terminal.app, run there

conda install ipykernel=4.8.2 ipython=6.5.0

and try again.

[ccordoba12]

Closing in favor of #2902, where there’s more people talking about this problem.