[ISSUE] Update to Python 3.9 appears to break multiple python packages in a Docker Container

[ISSUE] Update to Python 3.9 appears to break multiple python packages in a Docker Container

[Frick-David]

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New issue by Frick-David on void-packages repository

https://github.com/void-linux/void-packages/issues/25606

Description:
-- Docker Container
-- Python 3.9 no longer byte compiles C-linked Python libraries such as `numpy` or `pandas` successfully.
-- I am hoping that a hold on Python in the container will work until 3.9 works again

Re: Update to Python 3.9 appears to break multiple python packages in a Docker Container

[ahesford]

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New comment by ahesford on void-packages repository

https://github.com/void-linux/void-packages/issues/25606#issuecomment-708612373

Comment:
I already have numpy and pandas installed, but reconfiguring shows successful byte compilation:
```
# xbps-reconfigure -f python3-numpy
python3-numpy: configuring ...
Byte-compiling python3.9 code for module numpy...
Updating ldconfig(8) cache...
python3-numpy: configured successfully.

# xbps-reconfigure -f python3-pandas
python3-pandas: configuring ...
Byte-compiling python3.9 code for module pandas...
Updating ldconfig(8) cache...
python3-pandas: configured successfully.
```

Similarly, I can install `python3-Flask-SQLAlchemy` and see no errors about byte-compiling that package or any of its dependencies. Did you upgrade all of the `python3-*` packages alongside `python3`?

Re: Update to Python 3.9 appears to break multiple python packages in a Docker Container

[ahesford]

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New comment by ahesford on void-packages repository

https://github.com/void-linux/void-packages/issues/25606#issuecomment-708624365

Comment:
FYI, [this Dockerfile](https://github.com/void-linux/void-packages/files/5380526/Dockerfile.txt) builds an image with byte-compiled Python packages. Do you have some cached layer that is causing problems? Try building your image with `--no-cache`.

Re: Update to Python 3.9 appears to break multiple python packages in a Docker Container

[ahesford]

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New comment by ahesford on void-packages repository

https://github.com/void-linux/void-packages/issues/25606#issuecomment-722404660

Comment:
Ping; have you uncovered any more about your issue?

Re: Update to Python 3.9 appears to break multiple python packages in a Docker Container

[Frick-David]

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New comment by Frick-David on void-packages repository

https://github.com/void-linux/void-packages/issues/25606#issuecomment-735520816

Comment:
@ahesford what you wrote seemed to fix the error . I was not using the python containers as those are based on Debian, not void. I do believe it much have been something in Docker's caching. Thanks for pointing that out. You were correct to close the issue. Thanks!