issues: 911663002

This data as json

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
911663002 MDU6SXNzdWU5MTE2NjMwMDI= 5438 Add Union Operators for Dataset 35968931 closed 0     2 2021-06-04T16:21:06Z 2021-06-04T16:35:36Z 2021-06-04T16:35:36Z MEMBER      

As of python 3.9, python dictionaries now support being merged via python c = a | b and updated via python c = a |= b see PEP 584.

xarray.Dataset is dict-like, so it would make sense to support the same syntax for merging. The way to achieve that is by adding new dunder methods to xarray.Dataset, something like

```python def or(self, other): if not isinstance(other, xr.Dataset): return NotImplemented new = xr.merge(self, other) return new

def ror(self, other): if not isinstance(other, xr.Dataset): return NotImplemented new = xr.merge(self, other) return new

def ior(self, other): self.merge(other) return self ```

The distinction between the intent of these different operators is whether a new object is returned or the original object is updated.

This would allow things like (ds1 | ds2).to_netcdf()

(This feature doesn't require python 3.9, it merely echoes a feature that is only available in 3.9+)

 
{
    "url": "https://api.github.com/repos/pydata/xarray/issues/5438/reactions",
    "total_count": 0,
    "+1": 0,
    "-1": 0,
    "laugh": 0,
    "hooray": 0,
    "confused": 0,
    "heart": 0,
    "rocket": 0,
    "eyes": 0
}
   completed 13221727 issue

Links from other tables