issue_comments: 702021297

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https://github.com/pydata/xarray/issues/4471#issuecomment-702021297 https://api.github.com/repos/pydata/xarray/issues/4471 702021297 MDEyOklzc3VlQ29tbWVudDcwMjAyMTI5Nw== 500246 2020-10-01T09:47:00Z 2020-10-01T09:47:00Z CONTRIBUTOR

However, a simple `xarray.open_dataset(fn, engine="h5netcdf") still fails with ValueError only if passed an open file, so there appear to be still other differences apart from the dimensionality of the variable attributes depending on backend.

 
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