CI failures following Xarray 2024.11.0 #627
Description
I didn't catch this until the pre-commit update PR failed, but it looks like CI has been failing since last week: https://github.com/NCAR/geocat-examples/actions/workflows/ci.yml
The failures are only on runs using the new 2024.11.0 Xarray release and the errors look something like this:
../Gallery/Contours/NCL_color_1.py failed leaving traceback:
Traceback (most recent call last):
File "/Users/runner/work/geocat-examples/geocat-examples/Gallery/Contours/NCL_color_1.py", line 68, in <module>
U.plot.contour(ax=ax,
File "/Users/runner/micromamba/envs/geocat-examples/lib/python3.10/site-packages/xarray/plot/accessor.py", line 542, in contour
return dataarray_plot.contour(self._da, *args, **kwargs)
File "/Users/runner/micromamba/envs/geocat-examples/lib/python3.10/site-packages/xarray/plot/dataarray_plot.py", line 1577, in newplotfunc
cmap_params, cbar_kwargs = _process_cmap_cbar_kwargs(
File "/Users/runner/micromamba/envs/geocat-examples/lib/python3.10/site-packages/xarray/plot/utils.py", line 967, in _process_cmap_cbar_kwargs
cmap_params = _determine_cmap_params(**cmap_kwargs)
File "/Users/runner/micromamba/envs/geocat-examples/lib/python3.10/site-packages/xarray/plot/utils.py", line 315, in _determine_cmap_params
cmap, newnorm = _build_discrete_cmap(cmap, levels, extend, filled)
File "/Users/runner/micromamba/envs/geocat-examples/lib/python3.10/site-packages/xarray/plot/utils.py", line 95, in _build_discrete_cmap
pal = _color_palette(cmap, n_colors)
File "/Users/runner/micromamba/envs/geocat-examples/lib/python3.10/site-packages/xarray/plot/utils.py", line 149, in _color_palette
sns = attempt_import("seaborn")
File "/Users/runner/micromamba/envs/geocat-examples/lib/python3.10/site-packages/xarray/core/utils.py", line 1245, in attempt_import
raise ImportError(
ImportError: The seaborn package is required but could not be imported. Please install it with your package manager (e.g. conda or pip).
I suspect this is a bug that got introduced upstream and not actually that we're leveraging seaborn and missing an import, but want to double check before reporting this as an issue.
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