Error building python azure-function

[Krayushkin68]

Error building python azure-function

[chandru4ni]

I am facing the same issue with the same package. I removed the package pypdfium2 from requirements.txt but it is trying to use the cached copy and giving the same error. In local it works correctly and while deployment I am facing this issue.

[Krayushkin68]

I tried deploying the same version today and it worked....
I don't know what changed in Oryx or Azure during that time, but the problem is solved for me.

[guillaumedelande]

I am facing the same issue. Any chance you know (by now) what has been changed to make it work?

[Krayushkin68]

@guillaumedelande Sorry, as I said, I just waited for a while without touching the project. During that time I was using the docker-deployed version. And after that I just re-deployed the exact same version to the exact same azure function service.
The only thing that was changed is that I recreated venv and reinstalled the azure functions plugin in vscode, but I don't think that was the case.

[chandru4ni]

What I found is, there are list of packages that Azure considers as whitelisted packages, if the package installed does not belong to list of whitelisted packages we kind these kind of errors. I resolved it by replacing this package with an alternative package. The package pdfplumber caused this issue in my case.

[guillaumedelande]

Did you explicitly add pypdfium2 in the requirements.txt file? At first I didn't because I was using pdfplumber, which seemed to need that dependency. It seems to have solved the issue by adding pypdfium2 to the requirements.txt (not 100% sure because I also have issues with installing torch, hence unable to test the library). Then you might have to try a couple of different versions. In my case this version works (machine is Linux with python 3.9.7):

3:39:05 PM XXX: [14:39:05+0000] Collecting pypdfium2
3:39:05 PM XXX: [14:39:05+0000]   Downloading pypdfium2-3.21.1-py3-none-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (2.8 MB)

[chandru4ni]

You are right, python version played a role in this. Made the local python version and the one on Azure the same but still was able to solve using pdfplumber. But pypdfium2 helped and able to proceed. thanks.