issue_comments: 246497484

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https://github.com/pydata/xarray/issues/1001#issuecomment-246497484 https://api.github.com/repos/pydata/xarray/issues/1001 246497484 MDEyOklzc3VlQ29tbWVudDI0NjQ5NzQ4NA== 1217238 2016-09-12T21:19:59Z 2016-09-12T21:19:59Z MEMBER

When you use a with block with an xarray object, it closes any associated netCDF file when you leave the block. When you type dataset.mean(dim='round') the file is already closed.

For interactive use, it's usually preferable to just write dataset = xarray.open_dataset('snellman.nc') and close it explicitly later when/if desired.

 
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