issue_comments: 341238029

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https://github.com/pydata/xarray/issues/1681#issuecomment-341238029 https://api.github.com/repos/pydata/xarray/issues/1681 341238029 MDEyOklzc3VlQ29tbWVudDM0MTIzODAyOQ== 1217238 2017-11-01T20:49:50Z 2017-11-01T20:49:50Z MEMBER

Which netCDF library were you using? I don't think netCDF as a file format has ever supported maps as attributes.

For example, looking at the spec, attributes can be a variable-length array of any scalar type (this is specifically for netCDF3, but the rules for netCDF4 are similar): attr = name nc_type nelems [values ...] nc_type = NC_BYTE | NC_CHAR | NC_SHORT | NC_INT | NC_FLOAT | NC_DOUBLE

In practice, I believe Python APIs (including xarray's various netCDF backends) usually decode single values to scalars.

 
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