issues: 784484810
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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 |
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784484810 | MDU6SXNzdWU3ODQ0ODQ4MTA= | 4798 | attributes that are lists of strings with a single member don't survive a round-trip | 7226087 | open | 0 | 7 | 2021-01-12T18:34:26Z | 2023-09-16T09:52:10Z | NONE | What happened: If I create a Dataset with an attr that is a list of strings with only a single member, write it to netcdf and open it again, the attr is a single string instead of a list of strings. What you expected to happen: Writing the Dataset to netcdf and opening it should not change the attrs. Minimal Complete Verifiable Example: ```python import xarray as xr ds = xr.Dataset(attrs={"foo": ["bar"]},) ds.to_netcdf("ds.nc", engine="netcdf4") rd = xr.open_dataset("ds.nc", engine="netcdf4") assert ds.attrs["foo"] == rd.attrs["foo"] ``` Anything else we need to know?: This was implemented in PR2045, including the test test_setncattr_string. However, there Environment: Output of <tt>xr.show_versions()</tt>INSTALLED VERSIONS ------------------ commit: f52a95cbe694336fe47bc5a42c713bee8ad74d64 python: 3.8.6 (default, Sep 25 2020, 09:36:53) [GCC 10.2.0] python-bits: 64 OS: Linux OS-release: 5.8.0-36-generic machine: x86_64 processor: x86_64 byteorder: little LC_ALL: None LANG: en_US.UTF-8 LOCALE: en_US.UTF-8 libhdf5: 1.12.0 libnetcdf: 4.7.4 xarray: 0.16.3.dev75+gf52a95cb pandas: 1.2.0 numpy: 1.19.5 scipy: None netCDF4: 1.5.5.1 pydap: None h5netcdf: None h5py: None Nio: None zarr: None cftime: 1.3.0 nc_time_axis: None PseudoNetCDF: None rasterio: None cfgrib: None iris: None bottleneck: None dask: 2020.12.0 distributed: 2020.12.0 matplotlib: None cartopy: None seaborn: None numbagg: None pint: None setuptools: 51.1.2 pip: 20.3.3 conda: None pytest: 6.2.1 IPython: None sphinx: None |
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13221727 | issue |