ummm TL-DR: this looks like orchestration, where one flask is managing a bunch of Plom-servers, not all of which are running. Improvements to
from plom.server import PlomServer to make this possible welcome
1 reply
HAve you looked at
PlomServer?
Its a background Plom Server you can launch, and in theory take down, restart
from say
ipython
Yeah although for some reason when I try
PlomServer.server._server_proc.terminate() it doesn't seem to do it???
Caveat, I'm not sure if that's actually where the problem is, my code might be breaking before it reaches that point
1 reply
can reproduce with that?
I was just suspicious since formerly I'd been trying to kill the server directly using its PID and that hadn't been working
There are two backends
popen2 and some builtin python thing: latter not reliable yet
likely related to problems you had before too :(
Anyway, the flask stuff is more likely a discussion for @arechnitzer_gitlab but the orchestration aspect should be doable
I don't quite yet see the mapping between many users, many flask instances and many plom server...
I think that there would still be one user with one flask instance, but the flask instance could possibly be managing multiple servers?
I think it could spin them up on demand as you suggest
they would all live inside the same container (with the flask) for now
I guess! Idea from my POV (wearing machine admin hat) is Prof X wants to use plom, so I run a docker instance and send her the URL and flask password. She can then launch as many pc-glue, or from-scratch assessments as she likes.
sort of, the flask thing is a bit too "long running", it it would be nice if each PlomServer came from the latest stable branch, and in their own dockers... and a pony
But maybe its a start.
Ideally the flask thing should be able to disappear, pull latest branch and come backup
But we don't have to save the entire world all a once. Baby steps!
Will the docs magically get easier to maintain if I finish up my "sphinx" branch and we move more and more docs in source? Or is this magical thinking on my part?
magical thinking explained: if docs are in tree, thou shalt not submit MR that are inconsistent with docs. Reviewers will force you to update the docs before they accept your MR
more than likely, we'll just open lots of "follow-up: update the docs for the foo change" bugs...
Hello PLOM Team. Suppose I used PLOM to generate PDFs, but then instead of printing them, I arranged for each one to be emailed to the target student. The student would either (a) print the exam, write on it, and scan/photo their work into a single PDF or (b) digitally annotate the PDF with their work. Then they deliver their PDF back to me inside an LMS. Could I expect that PLOM would manage these returned PDFs well? Assuming the students don't take garbage photos of the pages, do you think it could work? Including if the students insert a page of scratch work here and there before they scan?
In other words, does the scanning of completed exams needs to be a controlled process?
My workflow: email/msg students a url like "
https://sekrit.math.com/exam/<SID>_random_hex.pdf" a few days before the test. At 11am (test start), I put those files in place and tell students to begin. 35 mins later, they stop writing and scan. They then upload to our LMS (Canvas). I then pull all those PDFs from Canvas (using the LMS's API) and scan them into Plom using plom-hwscan (we call this "Homework Mode" in Plom)
This worked very well, but some of the scripting is a bit immature still (see https://gitlab.com/plom/plom/-/blob/main/contrib/plom-server-from-canvas.py and https://gitlab.com/plom/plom/-/blob/main/contrib/plom-push-to-canvas.py). We're also working on making a webUI that allows one to connect to Canvas, grab any assignment containing PDF files and populate a Plom server from them.
What LMS do you use?
1 reply
ah - our students were pretty adamant that they did not want to be required to print or use a tablet
could have been "Print a test - no way - I need those extra 30 seconds"
but - we do now have a pretty stable (not documented on the website) workflow for "Students uploaded stuff to Canvas - download it into plom and mark it there"
that works for homework and tests
there is definitely "fun" around the edges interacting with Canvas to make it work but it is not impossible and likely much easier for the second LMS
wHAt i really want is to tackle cheating with a site like Chegg. Content is either copy-pasted into Chegg, or a photo is taken and posted, or the photo is posted and Chegg uses OCR to turn it into text. I have some ideas like how I opened this post with "wHAt i" which would mean 01100, which is student number 12, and then maybe I can hope that this sneaky business survives the trip to Chegg and outs the post-maker. Do you think I could also get PLOM to start encoding student numbers inside the text of questions in some way like this? Not as obvious as the QR codes, and something that is likely to survive all the routes that bring a question to Chegg?
we should be doing that with the solutions we build for students....