issues: 618985094

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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
618985094 MDU6SXNzdWU2MTg5ODUwOTQ= 4065 keep_attrs not respected for unary operators 500246 closed 0     2 2020-05-15T13:55:14Z 2020-10-14T16:29:51Z 2020-10-14T16:29:51Z CONTRIBUTOR      

The xarray global option keep_attrs (introduced in #2482 ) is not respected for unary operators.

MCVE Code Sample

python import xarray as xr x = xr.DataArray([1, 2, 3], attrs={"A": "B"}) with xr.set_options(keep_attrs=True): y = ~x print(x.attrs, y.attrs)

Expected Output

I expect

{'A': 'B'} {'A': 'B'}

Problem Description

I get:

{'A': 'B'} {}

I get the same for the other unary operators +x, -x, and abs(x).

Versions

Tested with latest xarray master (see below for details).

Output of <tt>xr.show_versions()</tt> INSTALLED VERSIONS ------------------ commit: None python: 3.8.2 | packaged by conda-forge | (default, Mar 23 2020, 18:16:37) [GCC 7.3.0] python-bits: 64 OS: Linux OS-release: 4.12.14-lp150.12.82-default machine: x86_64 processor: x86_64 byteorder: little LC_ALL: None LANG: en_GB.UTF-8 LOCALE: en_GB.UTF-8 libhdf5: 1.10.5 libnetcdf: 4.7.4 xarray: 0.15.2.dev64+g2542a63f pandas: 1.0.3 numpy: 1.18.1 scipy: 1.4.1 netCDF4: 1.5.3 pydap: None h5netcdf: None h5py: 2.10.0 Nio: None zarr: 2.4.0 cftime: 1.1.1.2 nc_time_axis: None PseudoNetCDF: None rasterio: 1.1.3 cfgrib: None iris: None bottleneck: None dask: 2.14.0 distributed: 2.14.0 matplotlib: 3.2.1 cartopy: 0.17.0 seaborn: None numbagg: None pint: None setuptools: 46.1.3.post20200325 pip: 20.0.2 conda: installed pytest: 5.4.1 IPython: 7.13.0 sphinx: None 
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   completed 13221727 issue

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