issue_comments: 730031761

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https://github.com/pydata/xarray/issues/4591#issuecomment-730031761 https://api.github.com/repos/pydata/xarray/issues/4591 730031761 MDEyOklzc3VlQ29tbWVudDczMDAzMTc2MQ== 1217238 2020-11-18T23:56:17Z 2020-11-18T23:56:17Z MEMBER

OK, I think I understand what's going on. Xarray serializes arguments that should suffice to recreate/open a backend-specific file object (e.g., h5netcdf.File). So if you pass in a file name to open_dataset(), that works fine. But if you pass in a file-like object (as is done here with fsspec) the file-like object needs to be serializable.

 
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