I was trying to work through the 2023 Simplified Run 2 Analysis lessons (leading up to using Coffea) and ran into a problem. I was able to do the lesson successfully during the workshop last year, but when I was going back through it this year, I got stuck in the introduction at the point where you import matplotlib. Something in the libraries downloaded into the container with the pip command updated the version of NumPy in the Docker container to version 2 of NumPy. It seems matplotlib only works with version 1 of NumPy. The seemingly relevant portion of the error message is:
A module that was compiled using NumPy 1.x cannot be run in
NumPy 2.0.1 as it may crash. To support both 1.x and 2.x
versions of NumPy, modules must be compiled with NumPy 2.0.
Some module may need to rebuild instead e.g. with 'pybind11>=2.12'.
If you are a user of the module, the easiest solution will be to
downgrade to 'numpy<2' or try to upgrade the affected module.
We expect that some modules will need time to support NumPy 2.
While this is a pleasantly specific error message that lets me know what the problem is, I don’t know enough about installing libraries to figure out what I need to do to fix it. Any help would be appreciated.
I also thought I should alert someone to the problem in case this might pop up in this year’s workshop. I suspect the problem starts with Hist (I got basically the same error when I tried to install just Hist last week), but I’m not sure.
Thanks, all!