Tab completion error

[adamcpovey]

Since I updated my conda environment today, tab completion in jupyter stopped working. The following error appears in the terminal,

[IPKernelApp] ERROR | Exception in message handler:
Traceback (most recent call last):
File "/data/conda/lib/python3.6/site-packages/ipykernel/kernelbase.py", line 267, in dispatch_shell
yield gen.maybe_future(handler(stream, idents, msg))
File "/data/conda/lib/python3.6/site-packages/tornado/gen.py", line 1133, in run
value = future.result()
File "/data/conda/lib/python3.6/site-packages/tornado/gen.py", line 326, in wrapper
yielded = next(result)
File "/data/conda/lib/python3.6/site-packages/ipykernel/kernelbase.py", line 572, in complete_request
matches = yield gen.maybe_future(self.do_complete(code, cursor_pos))
File "/data/conda/lib/python3.6/site-packages/ipykernel/ipkernel.py", line 348, in do_complete
return self._experimental_do_complete(code, cursor_pos)
File "/data/conda/lib/python3.6/site-packages/ipykernel/ipkernel.py", line 373, in _experimental_do_complete
completions = list(_rectify_completions(code, raw_completions))
File "/data/conda/lib/python3.6/site-packages/IPython/core/completer.py", line 485, in rectify_completions
completions = list(completions)
File "/data/conda/lib/python3.6/site-packages/IPython/core/completer.py", line 1809, in completions
for c in self._completions(text, offset, _timeout=self.jedi_compute_type_timeout/1000):
File "/data/conda/lib/python3.6/site-packages/IPython/core/completer.py", line 1853, in _completions
full_text=full_text, cursor_line=cursor_line, cursor_pos=cursor_column)
File "/data/conda/lib/python3.6/site-packages/IPython/core/completer.py", line 2020, in _complete
cursor_pos, cursor_line, full_text)
File "/data/conda/lib/python3.6/site-packages/IPython/core/completer.py", line 1364, in _jedi_matches
text[:offset], namespaces, column=cursor_column, line=cursor_line + 1)
File "/data/conda/lib/python3.6/site-packages/jedi/api/init.py", line 429, in init
super(Interpreter, self).init(source, environment=environment, **kwds)
File "/data/conda/lib/python3.6/site-packages/jedi/api/init.py", line 102, in init
os.path.dirname(self.path)if path else os.getcwd()
File "/data/conda/lib/python3.6/site-packages/jedi/api/project.py", line 181, in get_default_project
if _is_django_path(dir):
File "/data/conda/lib/python3.6/site-packages/jedi/api/project.py", line 152, in _is_django_path
with open(os.path.join(directory, 'manage.py'), 'rb') as f:
IsADirectoryError: [Errno 21] Is a directory: '/home/manage.py'

This was tested in a fresh environment I generated by the following,

export PATH=/data/conda:/usr/bin:/usr/local/bin:.
cd /data
$HOME/Miniconda3-latest-Linux-x86_64.sh
< PREFIX=/data/conda
conda install jupyter nb_conda numpy
jupyter notebook

where the script came from here and I'm running jupyter within Chrome 70.0.3538.102 on Ubuntu 12.04 (we hope to be allowed to update in a few months).

In a new notebook, I ran import numpy as np. In a new cell, I typed np. and hit tab, which generated the above error.