issues: 326344778

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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
326344778 MDU6SXNzdWUzMjYzNDQ3Nzg= 2183 converting int vars to floats when I where the enclosing ds? 1778852 open 0     5 2018-05-25T00:48:43Z 2022-04-09T02:14:23Z   NONE      

Code Sample

```python test_ds = xr.Dataset()

test_ds['var1'] = xr.DataArray(np.arange(5)) test_ds['var2'] = xr.DataArray(np.ones(5))

assert(test_ds['var1'].dtype == np.int64)

assert(test_ds.where(test_ds['var2'] == 1)['var1'].dtype == np.int64) ```

Problem description

Second assert fails, which is a bit strange I think. Is that intended? If so, whats the reasoning?

Output of xr.show_versions()

commit: None python: 2.7.14.final.0 python-bits: 64 OS: Linux OS-release: 4.9.87-linuxkit-aufs machine: x86_64 processor: x86_64 byteorder: little LC_ALL: en_US.UTF-8 LANG: None LOCALE: None.None xarray: 0.10.3 pandas: 0.22.0 numpy: 1.14.3 scipy: 1.1.0 netCDF4: None h5netcdf: None h5py: None Nio: None zarr: None bottleneck: 1.2.1 cyordereddict: None dask: None distributed: None matplotlib: 2.2.2 cartopy: None seaborn: 0.8.1 setuptools: 39.1.0 pip: 10.0.1 conda: None pytest: 3.5.1 IPython: 5.6.0 sphinx: None 
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     13221727 issue

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