[Python] xarray create variables attributes

I want to create a dataset with xarray and want to add attributes to variables while creating the dataset. The xarray documentation provides a way of adding global attribute. For example, as below:

ds = xr.Dataset(
data_vars=dict(
'temperature'=(["x", "y", "time"], temperature),
'precipitation'=(["x", "y", "time"], precipitation),
),
coords=dict(
lon=(["x", "y"], lon),
lat=(["x", "y"], lat),
time=time,
reference_time=reference_time,
),
attrs=dict(description="Weather related data."),)


One way to add variable attribute would be some like this:

ds['temperature'].attrs = {"units": K, '_FillValue': -999}


But, in my opinion it is more like updating the attribute. Is there a way to directly assign attributes while creating the dataset directly using xr.Dataset ?

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