nbdev and 'coroutine' object is not subscriptable

Question

I recently updated the nbdev version of an "old" project of mine (I made a new conda environment), and now automatic tests in github (the "Run tests" part of the build) are failing with a

'coroutine' object is not subscriptable

error per notebook, that seems totally unrelated to my code. There are also a few

RuntimeWarning: Enable tracemalloc to get the object allocation traceback

and

RuntimeWarning: coroutine 'ZMQSocketChannel.get_msg' was never awaited

None of this happens when I run nbdev_test_nbs locally.

Any clue?

I am facing this same error as well. – Parth Thakkar Apr 08 '21 at 09:11 — Parth Thakkar, Apr 08 '21 at 09:11

score 9 · Accepted Answer · answered Apr 12 '21 at 15:19

9

I faced the very same issue. It turned out that I had nbconvert version pinned in my setup.py, like 'nbconvert~=5.6.1'.

After removing this restriction tests started to pass again.

P.S. The version of nbconvert is now 6+.

answered Apr 12 '21 at 15:19

Yury Kirienko

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I don't understand how this could have been the solution, as even nbdev 1.1.21 still requires nbconvert < 6 ? – K.-Michael Aye Oct 14 '21 at 23:21

score 4 · Answer 2 · edited Feb 23 '22 at 18:36

4

This is an issue with jupyter-client, see there was a yanked version deployed on the day you reported: https://pypi.org/project/jupyter-client/#history

This thread details the RCA: https://github.com/jupyter/jupyter_client/issues/637

This was solved for me by downgrading to jupyter-client==6.1.12

edited Feb 23 '22 at 18:36

Ilya V. Schurov

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answered Apr 12 '21 at 16:34

Nick

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I didn't have `jupyter_client` around, but had this error. In the logs (yours as well) one may see that the source of the error is `nbconvert/preprocessors/execute.py`. – Yury Kirienko Apr 12 '21 at 17:18

score 0 · Answer 3 · answered Jun 15 '22 at 06:38

I was not able to "autograde" the submissions or "validate" my notebooks. For some reason which I do not remember, I downgraded the "nbconvert" to 5.6.1 (I think there was an issue). Having this problem, I have upgraded my "nbconvert" back to 6.5.0 and now I can auto-grade the submissions.

Note: in my other jupyter environment (python 3.6, nbconvert 5.6.1, and jupyter-client: 6.1.7), I can both validate and auto-grade the notebooks.

nbdev and 'coroutine' object is not subscriptable

3 Answers3