Ok, I worked through the suggestions above and things seemed to be working. I started with the poisson example in Jupyter notebook. All cells seem to execute properly except the Draw(gfu) function. As I understand from the documentation this is supposed to show results in a popup window? In my case nothing happens. I did notice that even though the first cell (below) seems to execute fine, the following error shows up in the command prompt window. Is it possible they are related and any suggestions for resolving the error? I am using Python 3.7.7.
Code:
import netgen.gui
from ngsolve import *
from netgen.geom2d import unit_square
Code:
ERROR:tornado.application:Exception in callback functools.partial(<function Kernel.enter_eventloop.<locals>.advance_eventloop at 0x000001E799E55708>)
Traceback (most recent call last):
File "c:\users\jon\appdata\local\programs\python\python37\lib\site-packages\tornado\ioloop.py", line 743, in _run_callback
ret = callback()
File "c:\users\jon\appdata\local\programs\python\python37\lib\site-packages\ipykernel\kernelbase.py", line 314, in advance_eventloop
eventloop(self)
File "c:\users\jon\appdata\local\programs\python\python37\lib\site-packages\ipykernel\eventloops.py", line 232, in loop_tk
app.tk.createfilehandler(stream.getsockopt(zmq.FD), READABLE, notifier)
AttributeError: '_tkinter.tkapp' object has no attribute 'createfilehandler'