Write a fresh Grib file from a dataset on python.

[Gibies]

How can I save my xarray dataset on a fresh grib file using pygrib?

In other words How can I generate a fresh grib message on python using pygrib.

[jswhit]

This should be a FAQ - you can't create a grib message from scratch with pygrib. You must have a 'template' grib message that you can modify (as in the example in the docs).