upgraded to pandas 2.1

[tomsail]

make test_full
succeeded (excepted mayavi)

[tomsail]

Ok I might have problems to reproduce the fail here: I am trying to build as in the CI:

mamba create  --name pyposeidon --file locks/conda-ubuntu-latest-binary-p3.9.lock 
mamba activate schism
mamba activate --stack pyposeidon
python -mpip install -r "${REQUIREMENTS_CI}"
python -mpip install ./

last line actially updates pandas :

Successfully built pyposeidon
Installing collected packages: tzdata, pandas, pyposeidon
  Attempting uninstall: pandas
    Found existing installation: pandas 1.5.3
    Uninstalling pandas-1.5.3:
      Successfully uninstalled pandas-1.5.3
Successfully installed pandas-2.1.2 pyposeidon-0.6.0 tzdata-2023.3

make test_schism passes for all 3 versions of python.

[tomsail]

sorry for the confusion. It was hard to debug and isolate the error. I have kept the changes minimal. PR ready to merge when GitHub CI will be finished.

[pmav99]

1. Please rebase and fixup the commits into a single one with an appropriate commit message (e.g. "Add pandas 2 compatibility" or something similar)
2. if not too much trouble please test if this works with 1.X, too. I think It should. Just test it locally and if it is ok, then just remove the constraint from pandas - i.e. use pandas = "*"

Other than that, good work!

[tomsail]

Thanks @pmav99. Yes tried already the option on my laptop. It should work