issue_comments: 764726612

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https://github.com/pydata/xarray/issues/4240#issuecomment-764726612 https://api.github.com/repos/pydata/xarray/issues/4240 764726612 MDEyOklzc3VlQ29tbWVudDc2NDcyNjYxMg== 5821660 2021-01-21T15:34:42Z 2021-01-21T15:46:36Z MEMBER

I've stumbled over this weird behaviour many times and was wondering why this happens. So AFAICT @shoyer hit the nail on the head but the root cause is that the Dataset is added to the notebook namespace somehow, if one just evaluates it in the cell.

This doesn't happen if you invoke the __repr__ via

python display(xr.open_dataset("saved_on_disk.nc"))

I've forced myself to use either print or display for xarray data. As this also happens if the Dataset is attached to a variable you would need to specifically delete (or .close()) the variable in question before opening again.

python try: del ds except NameError: pass ds = xr.open_dataset("saved_on_disk.nc")

 
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