Viewer console not working when running under ipython

🐛 Bug

If I run napari from an ipython console with the %gui qt magic then I can’t access the ipython console from the viewer. Running from python rather than ipython, the console works as expected

To Reproduce

The following opens a viewer, the error is produced when trying to access the console from the viewer

(base) ➜  napari git:(master) ✗ conda activate napari
(napari) ➜  napari git:(master) ✗ ipython
Python 3.9.5 | packaged by conda-forge | (default, Jun 19 2021, 00:27:35) 
Type 'copyright', 'credits' or 'license' for more information
IPython 7.24.1 -- An enhanced Interactive Python. Type '?' for help.

In [1]: %gui qt

In [2]: %run examples/add_image.py

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
~/Programming/napari/napari/utils/action_manager.py in <lambda>()
     52     def callable(self, context):
     53         if not hasattr(self, '_command_with_context'):
---> 54             self._command_with_context = lambda: call_with_context(
     55                 self.command, context
     56             )

~/Programming/napari/napari/utils/action_manager.py in call_with_context(function, context)
     41     ]
     42     ctx = {k: v for k, v in context.items() if k in context_keys}
---> 43     return function(**ctx)
     44 
     45 

~/Programming/napari/napari/_qt/qt_viewer.py in toggle_console_visibility(self, event)
    724         """
    725         # force instantiation of console if not already instantiated
--> 726         _ = self.console
    727 
    728         viz = not self.dockConsole.isVisible()

AttributeError: 'QtViewer' object has no attribute 'console'

The following works fine

(napari) ➜  napari git:(master) ✗ python examples/add_image.py 

This used to work fine on my system, not sure exactly when it broke… will have to do some searching

napari --info

napari: 0.4.10.dev0+g609fd9f4.d20210623
Platform: macOS-11.2.1-x86_64-i386-64bit
System: MacOS 11.2.1
Python: 3.9.5 | packaged by conda-forge | (default, Jun 19 2021, 00:27:35)  [Clang 11.1.0 ]
Qt: 5.15.2
PyQt5: 5.15.4
NumPy: 1.21.0
SciPy: 1.7.0
Dask: 2021.06.2
VisPy: 0.6.6

OpenGL:
  - GL version:  2.1 Metal - 71.0.7
  - MAX_TEXTURE_SIZE: 16384

Screens:
  - screen 1: resolution 1440x900, scale 2.0

Plugins:
  - console: 0.0.3
  - scikit-image: 0.4.10.dev0+g609fd9f4.d20210623
  - svg: 0.1.5

[brisvag]

Console indeed never worked from IPython! It was one of the reasons why I was interested in doing #2378.

[tlambert03]

I know there’s been some discussion somewhere about disabling that button when running via ipython. still a good idea…

As for pycharm, I’ll need to play with it (don’t have much experience with it). Maybe we can screen share for that?