Import Error using XArrayBilinearResampler missing failed import of dask

[benjaminesse]

Code Sample, a minimal, complete, and verifiable piece of code

from pyresample import bilinear

Problem description

Importing bilinear without the required libraries raises the following warning:

UserWarning: XArray and/or zarr not found, XArrayBilinearResampler won't be available.

This occurs when xarray and zarr are installed (and confirmed with conda list).

The actual problem is missing dask, but this is missing from the warning, and so is hard to diagnose (without going into the pyresample files themselves).

Installing dask fixes the issue.

Would it be possible to change the warning message to something like:

UserWarning: XArray, dask and/or zarr not found, XArrayBilinearResampler won't be available.

Thanks!

Versions of Python, package at hand and relevant dependencies

Python 3.9.13 (Anaconda)
OS: Ubuntu

[djhoese]

@benjaminesse Thanks for bringing this up. Your suggestion sounds like a good idea, but I'd prefer an oxford comma:

UserWarning: XArray, dask, and/or zarr not found, XArrayBilinearResampler won't be available.

How would you feel about making a pull request with a fix for this?

[benjaminesse]

@djhoese pull request has been created with the Oxford comma included (I think, this was my first pull request so I hope I did everything right...)