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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
1478060173 I_kwDOAMm_X85YGWiN 7362 `xr.where()` with numpy inputs produces error if global options changed anissa111 38434768 closed 0     4 2022-12-06T03:17:55Z 2022-12-10T21:52:38Z 2022-12-10T21:52:38Z NONE      

What happened?

https://github.com/pydata/xarray/pull/7229 seems to have introduced a possibility for errors if the set_options(keep_attrs=True) is used and then subsequently xr.where() is called using numpy inputs

What did you expect to happen?

Previous to xarray v2022.12.0, this did not occur. xr.where should have a check for non-Dataset inputs before trying to access attrs

Minimal Complete Verifiable Example

```Python

import xarray as xr import numpy as np xr.set_options(keep_attrs=True) <xarray.core.options.set_options object at 0x100cb8760> a = np.arange(10) b = np.arange(15,25) b = xr.where(a < 5, a, b) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/Users/anissaz/opt/miniconda3/envs/geocat_comp_build/lib/python3.10/site-packages/xarray/core/computation.py", line 1887, in where result.attrs = getattr(x, "attrs", {}) AttributeError: 'numpy.ndarray' object has no attribute 'attrs' ```

MVCE confirmation

  • [X] Minimal example — the example is as focused as reasonably possible to demonstrate the underlying issue in xarray.
  • [X] Complete example — the example is self-contained, including all data and the text of any traceback.
  • [X] Verifiable example — the example copy & pastes into an IPython prompt or Binder notebook, returning the result.
  • [X] New issue — a search of GitHub Issues suggests this is not a duplicate.

Relevant log output

No response

Anything else we need to know?

Discovered via https://github.com/NCAR/geocat-comp/issues/308

Environment

INSTALLED VERSIONS ------------------ commit: None python: 3.10.6 | packaged by conda-forge | (main, Aug 22 2022, 20:41:54) [Clang 13.0.1 ] python-bits: 64 OS: Darwin OS-release: 21.6.0 machine: x86_64 processor: i386 byteorder: little LC_ALL: None LANG: en_US.UTF-8 LOCALE: ('en_US', 'UTF-8') libhdf5: 1.12.2 libnetcdf: 4.8.1 xarray: 2022.12.0 pandas: 1.5.1 numpy: 1.23.5 scipy: 1.9.3 netCDF4: 1.6.2 pydap: None h5netcdf: None h5py: None Nio: None zarr: None cftime: 1.6.2 nc_time_axis: None PseudoNetCDF: None rasterio: None cfgrib: None iris: None bottleneck: 1.3.5 dask: 2022.10.0 distributed: 2022.10.0 matplotlib: 3.6.1 cartopy: 0.21.0 seaborn: None numbagg: None fsspec: 2022.10.0 cupy: None pint: 0.19.2 sparse: None flox: None numpy_groupies: None setuptools: 65.5.0 pip: 22.3 conda: None pytest: 7.2.0 mypy: None IPython: None sphinx: None 
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   completed xarray 13221727 issue

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