nbgrader with Jupyterhub and Sqlalchemy not working #1796
Comments
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I guess this means that #1788 should have bumped up the minimum version as well, That said, I cannot think of why nbgrader 0.8.4 wouldn't work with some version of JupyterHub. If you could share the errors you encounter with sqlalchemy 2.x, I am happy to take a look. I'll also be doing some Hub related things myself, so I can confirm if it is working or not, but it might take a while for me to get to it. |
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Connecting to db is followed by this output Informations given about jupyterhub and sqlalchemy can be found here: As far as I see Jupyterhub 2.3.1 pinned sqlalchemy <2. I will try working with version 0.8.3 of nbgrader. |
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I missed that JupyterHub requirements are written in requirements.txt and
not in pyproject.toml, so I completely missed the dependency on sqlalchemy.
nbgrader 0.8.3 should work then. Sorry for the trouble.
…On Fri, Jun 30, 2023 at 09:12 christina-seegers ***@***.***> wrote:
Connecting to db is followed by this output
jupyterhub | [E 2023-06-29 09:32:13.769 JupyterHub app:3297]
jupyterhub | Traceback (most recent call last):
jupyterhub | File
"/usr/local/lib/python3.8/dist-packages/jupyterhub/app.py", line 3294, in
launch_instance_async
jupyterhub | await self.initialize(argv)
jupyterhub | File
"/usr/local/lib/python3.8/dist-packages/jupyterhub/app.py", line 2813, in
initialize
jupyterhub | self.init_db()
jupyterhub | File
"/usr/local/lib/python3.8/dist-packages/jupyterhub/app.py", line 1777, in
init_db
jupyterhub | dbutil.upgrade_if_needed(self.db_url, log=self.log)
jupyterhub | File
"/usr/local/lib/python3.8/dist-packages/jupyterhub/dbutil.py", line 112, in
upgrade_if_needed
jupyterhub | orm.check_db_revision(engine)
jupyterhub | File
"/usr/local/lib/python3.8/dist-packages/jupyterhub/orm.py", line 949, in
check_db_revision
jupyterhub | alembic_revision = engine.execute(
jupyterhub | AttributeError: 'Engine' object has no attribute 'execute'
jupyterhub |
jupyterhub | [D 2023-06-29 09:32:13.770 JupyterHub application:1028]
Exiting application: jupyterhub
notebook-dev |
Informations given about jupyterhub and sqlalchemy can be found here:
jupyterhub/dockerspawner#477
<jupyterhub/dockerspawner#477> or here:
jupyterhub/dockerspawner#478
<jupyterhub/dockerspawner#478>
As far as I see Jupyterhub 2.3.1 pinned sqlalchemy <2.
My try to force sqlalchemy to version 2 lead to successful installation of
nbgrader 0.8.4 but destroyed the hub.
I will try working with version 0.8.3 of nbgrader.
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Fixed with:
Released in: |
Operating system
?
nbgrader --version0.8.4
jupyterhub --version(if used with JupyterHub)2.3.1
jupyter notebook --versionnone
Expected behavior
I can install nbgrader in Version 0.8.4 after installing JupyterHub 2.3.1.
Actual behavior
I get an error try to install Version 0.8.4 if I do not use Sqlalchemy 2.0 (which I can not because JupyterHub 2.x is not working with this Version 3.x does, but nbgrader does not support Version 3.x as far as I see).
Error:
Steps to reproduce the behavior
Start with installing jupyterhub (I used a docker image: jupyterhub/jupyterhub:2.3.1) and then install nbgrader 0.8.4
If I install sqlalchemy 2.x (before nbgrader) then there is no problem installing ... but the jupyterhub crashes, since it cannot run with sqlalchemy 2.x ...
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