Traceback (most recent call last):


 "/Users/walter/pyvenvs/ipython-bad/bin/ipython", line 8, in <module>

sys.exit(start_ipython())


 "/Users/walter/pyvenvs/ipython-bad/lib/python3.8/site-packages/IPython/__init__.py", line 126, in start_ipython

return launch_new_instance(argv=argv, **kwargs)


 "/Users/walter/pyvenvs/ipython-bad/lib/python3.8/site-packages/traitlets/config/application.py", line 837, in launch_instance

app.start()


 "/Users/walter/pyvenvs/ipython-bad/lib/python3.8/site-packages/IPython/terminal/ipapp.py", line 356, in start

self.shell.mainloop()


 "/Users/walter/pyvenvs/ipython-bad/lib/python3.8/site-packages/IPython/terminal/interactiveshell.py", line 564, in mainloop

self.interact()


 "/Users/walter/pyvenvs/ipython-bad/lib/python3.8/site-packages/IPython/terminal/interactiveshell.py", line 555, in interact

self.run_cell(code, store_history=True)


 "/Users/walter/pyvenvs/ipython-bad/lib/python3.8/site-packages/IPython/core/interactiveshell.py", line 2876, in run_cell

result = self._run_cell(


 "/Users/walter/pyvenvs/ipython-bad/lib/python3.8/site-packages/IPython/core/interactiveshell.py", line 2927, in _run_cell

self.showtraceback(running_compiled_code=True)


 "/Users/walter/pyvenvs/ipython-bad/lib/python3.8/site-packages/IPython/core/interactiveshell.py", line 2046, in showtraceback

stb = self.InteractiveTB.structured_traceback(etype,


 "/Users/walter/pyvenvs/ipython-bad/lib/python3.8/site-packages/IPython/core/ultratb.py", line 1435, in structured_traceback

return FormattedTB.structured_traceback(


 "/Users/walter/pyvenvs/ipython-bad/lib/python3.8/site-packages/IPython/core/ultratb.py", line 1335, in structured_traceback

return VerboseTB.structured_traceback(


 "/Users/walter/pyvenvs/ipython-bad/lib/python3.8/site-packages/IPython/core/ultratb.py", line 1210, in structured_traceback

formatted_exceptions += self.format_exception_as_a_whole(etype, evalue, etb, lines_of_context,


 "/Users/walter/pyvenvs/ipython-bad/lib/python3.8/site-packages/IPython/core/ultratb.py", line 1152, in format_exception_as_a_whole

frames = self.format_records(records, last_unique, recursion_repeat)


 "/Users/walter/pyvenvs/ipython-bad/lib/python3.8/site-packages/IPython/core/ultratb.py", line 891, in format_records

if r[0].f_locals.get("__tracebackhide__", 0):
AttributeError: 'list' object has no attribute 'get'

Traceback (most recent call last):


 "/Users/avigan/anaconda3/lib/python3.6/site-packages/tornado/ioloop.py", line 605, in _run_callback

ret = callback()


 "/Users/avigan/anaconda3/lib/python3.6/site-packages/tornado/stack_context.py", line 277, in null_wrapper

return fn(*args, **kwargs)


 "/Users/avigan/anaconda3/lib/python3.6/site-packages/ipykernel/kernelbase.py", line 265, in enter_eventloop

self.eventloop(self)


 "/Users/avigan/anaconda3/lib/python3.6/site-packages/ipykernel/eventloops.py", line 277, in loop_cocoa

show.mainloop()
AttributeError: 'function' object has no attribute 'mainloop'
