issues: 321928898

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id node_id number title user state locked assignee milestone comments created_at updated_at closed_at author_association active_lock_reason draft pull_request body reactions performed_via_github_app state_reason repo type
321928898 MDU6SXNzdWUzMjE5Mjg4OTg= 2114 keep_attrs=True does not work `apply_ufunc` with xr.Variable 6815844 closed 0     2 2018-05-10T13:21:07Z 2018-05-11T22:54:44Z 2018-05-11T22:54:44Z MEMBER      

Code Sample, a copy-pastable example if possible

keep_attrs=True works nice for xr.DataArray, but it is neglected for xr.Variable

```python In [2]: import numpy as np In [3]: import xarray as xr In [4]: da = xr.DataArray([0, 1, 2], dims='x', attrs={'foo': 'var'}) In [5]: func = lambda x: x*2 In [6]: xr.apply_ufunc(func, da, keep_attrs=True, input_core_dims=[['x']], outpu ...: t_core_dims=[['z']]) Out[6]: <xarray.DataArray (z: 3)> # attrs are tracked for xr.DataArray array([0, 2, 4]) Dimensions without coordinates: z Attributes: foo: var

In [7]: xr.apply_ufunc(func, da.variable, keep_attrs=True, input_core_dims=[['x' ...: ]], output_core_dims=[['z']]) Out[7]: <xarray.Variable (z: 3)> # attrs are dropped array([0, 2, 4]) ```

Problem description

keep_attrs=True should work also with xr.Variable

Expected Output

python <xarray.Variable (z: 3)> # attrs are dropped array([0, 2, 4]) Attributes: foo: var

 
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   completed 13221727 issue

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