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issues: 683649612

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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
683649612 MDU6SXNzdWU2ODM2NDk2MTI= 4362 Surprising deepcopy semantics with dtype='object' 6875882 closed 0     4 2020-08-21T15:40:59Z 2020-08-27T14:56:48Z 2020-08-27T14:56:48Z CONTRIBUTOR      

```python from copy import deepcopy import numpy as np import xarray as xr

class Dummy: pass

a0 = np.array([Dummy()]) a1 = deepcopy(a0) print(a0[0] is a1[0]) # False, as expected

x0 = xr.DataArray(a0, dims='dummy') x1 = deepcopy(x0) print(x0.values[0] is x1.values[0]) # unexpectedly True ```

I think this is a bug, and would be fixed with an extra deepcopy around here

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