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  • 🐛 NetCDF4 RuntimeWarning if xarray is imported before netCDF4 · 8 ✖

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  • COLLABORATOR · 8 ✖
id html_url issue_url node_id user created_at updated_at ▲ author_association body reactions performed_via_github_app issue
1325467359 https://github.com/pydata/xarray/issues/7259#issuecomment-1325467359 https://api.github.com/repos/pydata/xarray/issues/7259 IC_kwDOAMm_X85PAQbf headtr1ck 43316012 2022-11-23T18:07:08Z 2022-11-23T18:07:08Z COLLABORATOR

weirdly enough, this: python -c "import warnings; warnings.filterwarnings('error'); import numpy; import netCDF4" does not error, haha.

 
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   🐛 NetCDF4 RuntimeWarning if xarray is imported before netCDF4 1437481995
1321127671 https://github.com/pydata/xarray/issues/7259#issuecomment-1321127671 https://api.github.com/repos/pydata/xarray/issues/7259 IC_kwDOAMm_X85Ovs73 headtr1ck 43316012 2022-11-20T13:02:52Z 2022-11-20T13:02:52Z COLLABORATOR

I would suggest to open an issue in netcdf4, since it seems to happen when you import numpy before netcdf4.

 
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   🐛 NetCDF4 RuntimeWarning if xarray is imported before netCDF4 1437481995
1320954489 https://github.com/pydata/xarray/issues/7259#issuecomment-1320954489 https://api.github.com/repos/pydata/xarray/issues/7259 IC_kwDOAMm_X85OvCp5 headtr1ck 43316012 2022-11-19T19:36:20Z 2022-11-19T19:36:20Z COLLABORATOR

If you are still motivated, you could try figuring out if it happens with older versions of numpy and netcdf as well...

 
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   🐛 NetCDF4 RuntimeWarning if xarray is imported before netCDF4 1437481995
1320953740 https://github.com/pydata/xarray/issues/7259#issuecomment-1320953740 https://api.github.com/repos/pydata/xarray/issues/7259 IC_kwDOAMm_X85OvCeM headtr1ck 43316012 2022-11-19T19:32:17Z 2022-11-19T19:32:28Z COLLABORATOR

So it happens when you import numpy before netCDF? Then I would claim that it is a netCDF problem, haha.

 
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   🐛 NetCDF4 RuntimeWarning if xarray is imported before netCDF4 1437481995
1320949554 https://github.com/pydata/xarray/issues/7259#issuecomment-1320949554 https://api.github.com/repos/pydata/xarray/issues/7259 IC_kwDOAMm_X85OvBcy headtr1ck 43316012 2022-11-19T19:09:47Z 2022-11-19T19:09:47Z COLLABORATOR

Can we find a minimum environment that can reproduce this results? I.e. only numpy, pandas, xarray and netcdf4?

 
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   🐛 NetCDF4 RuntimeWarning if xarray is imported before netCDF4 1437481995
1306315928 https://github.com/pydata/xarray/issues/7259#issuecomment-1306315928 https://api.github.com/repos/pydata/xarray/issues/7259 IC_kwDOAMm_X85N3MyY headtr1ck 43316012 2022-11-07T22:30:07Z 2022-11-07T22:30:07Z COLLABORATOR

Is it repeatable locally with the exact same package versions installed?

 
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   🐛 NetCDF4 RuntimeWarning if xarray is imported before netCDF4 1437481995
1306091745 https://github.com/pydata/xarray/issues/7259#issuecomment-1306091745 https://api.github.com/repos/pydata/xarray/issues/7259 IC_kwDOAMm_X85N2WDh headtr1ck 43316012 2022-11-07T19:33:55Z 2022-11-07T19:33:55Z COLLABORATOR

I have run into this problem already several times and the problem was always a somehow broken numpy install. A reinstall usually fixed this for me. But I assume this is part of a CI pipeline or so?

 
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   🐛 NetCDF4 RuntimeWarning if xarray is imported before netCDF4 1437481995
1305239128 https://github.com/pydata/xarray/issues/7259#issuecomment-1305239128 https://api.github.com/repos/pydata/xarray/issues/7259 IC_kwDOAMm_X85NzF5Y headtr1ck 43316012 2022-11-07T08:19:30Z 2022-11-07T08:19:30Z COLLABORATOR

It is true that the import behavior had changed in the linked PR (it is now lazy importing netCDF4) but I don't see how this can cause such problems.

Normally this warning indicates that something is wrong with your install, but since you can solve it by importing netcdf4 first, I have no idea what is going wrong ...

 
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   🐛 NetCDF4 RuntimeWarning if xarray is imported before netCDF4 1437481995

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