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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
626625818 MDExOlB1bGxSZXF1ZXN0NDI0NTgzMjYw 4108 Convert Variable to IndexVariable or vice versa when renamed dcherian 2448579 closed 0     2 2020-05-28T15:59:53Z 2022-10-18T19:15:54Z 2021-09-23T17:51:16Z MEMBER   0 pydata/xarray/pulls/4108
  • [x] Closes #4107, closes #4417
  • [x] Tests added
  • [x] Passes isort -rc . && black . && mypy . && flake8
  • [x] Fully documented, including whats-new.rst for all changes and api.rst for new API
 
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     xarray 13221727 pull
626591460 MDU6SXNzdWU2MjY1OTE0NjA= 4107 renaming Variable to a dimension name does not convert to IndexVariable dcherian 2448579 closed 0 benbovy 4160723   0 2020-05-28T15:11:49Z 2022-09-27T09:33:42Z 2022-09-27T09:33:42Z MEMBER      

Seen in #4103

MCVE Code Sample

```python from xarray.tests import assert_identical

coord_1 = xr.DataArray([1, 2], dims=["coord_1"], attrs={"attrs": True}) da = xr.DataArray([1, 0], [coord_1]) obj = da.reset_index("coord_1").rename({"coord_1_": "coord_1"}) assert_identical(da, obj) ```

Expected Output

Problem Description

``` AssertionErrorTraceback (most recent call last) <ipython-input-19-02ef6bd89884> in <module> ----> 1 assert_identical(da, obj)

~/work/python/xarray/xarray/tests/init.py in assert_identical(a, b) 160 xarray.testing.assert_identical(a, b) 161 xarray.testing._assert_internal_invariants(a) --> 162 xarray.testing._assert_internal_invariants(b) 163 164

~/work/python/xarray/xarray/testing.py in _assert_internal_invariants(xarray_obj) 265 _assert_variable_invariants(xarray_obj) 266 elif isinstance(xarray_obj, DataArray): --> 267 _assert_dataarray_invariants(xarray_obj) 268 elif isinstance(xarray_obj, Dataset): 269 _assert_dataset_invariants(xarray_obj)

~/work/python/xarray/xarray/testing.py in _assert_dataarray_invariants(da) 210 assert all( 211 isinstance(v, IndexVariable) for (k, v) in da._coords.items() if v.dims == (k,) --> 212 ), {k: type(v) for k, v in da._coords.items()} 213 for k, v in da._coords.items(): 214 _assert_variable_invariants(v, k)

AssertionError: {'coord_1': <class 'xarray.core.variable.Variable'>} ```

Versions

Output of <tt>xr.show_versions()</tt> 
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   completed xarray 13221727 issue

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