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 1315607023,I_kwDOAMm_X85OapHv,6818,xarray 2022.6.0 doesn't work well with numpy 1.20,3974108,closed,0,,,8,2022-07-23T08:54:29Z,2022-09-22T21:09:15Z,2022-07-30T21:11:09Z,NONE,,,,"### What happened? Fail to import xarray when xarray 2022.6.0 and numpy 1.20 are installed. It seems xarray 2022.6.0 is not compatible with numpy 1.20. I also tried numpy 1.19 and 1.21, they all work well with xarray 2022.6.0. ### What did you expect to happen? xarray 2022.6.0 should work well with numpy 1.20. ### Minimal Complete Verifiable Example ```Python $ conda create --name xarraytest xarray=2022.6.0 numpy=1.20 $ conda activate xarraytest $ conda list # Name Version Build Channel _libgcc_mutex 0.1 conda_forge conda-forge _openmp_mutex 4.5 2_gnu conda-forge bzip2 1.0.8 h7f98852_4 conda-forge ca-certificates 2022.6.15 ha878542_0 conda-forge importlib-metadata 4.11.4 py39hf3d152e_0 conda-forge importlib_metadata 4.11.4 hd8ed1ab_0 conda-forge ld_impl_linux-64 2.36.1 hea4e1c9_2 conda-forge libblas 3.9.0 15_linux64_openblas conda-forge libcblas 3.9.0 15_linux64_openblas conda-forge libffi 3.4.2 h7f98852_5 conda-forge libgcc-ng 12.1.0 h8d9b700_16 conda-forge libgfortran-ng 12.1.0 h69a702a_16 conda-forge libgfortran5 12.1.0 hdcd56e2_16 conda-forge libgomp 12.1.0 h8d9b700_16 conda-forge liblapack 3.9.0 15_linux64_openblas conda-forge libnsl 2.0.0 h7f98852_0 conda-forge libopenblas 0.3.20 pthreads_h78a6416_0 conda-forge libstdcxx-ng 12.1.0 ha89aaad_16 conda-forge libuuid 2.32.1 h7f98852_1000 conda-forge libzlib 1.2.12 h166bdaf_2 conda-forge ncurses 6.3 h27087fc_1 conda-forge numpy 1.20.3 py39hd249d9e_2 conda-forge openssl 3.0.5 h166bdaf_0 conda-forge packaging 21.3 pyhd8ed1ab_0 conda-forge pandas 1.4.3 py39h1832856_0 conda-forge pip 22.2 pyhd8ed1ab_0 conda-forge pyparsing 3.0.9 pyhd8ed1ab_0 conda-forge python 3.9.13 h2660328_0_cpython conda-forge python-dateutil 2.8.2 pyhd8ed1ab_0 conda-forge python_abi 3.9 2_cp39 conda-forge pytz 2022.1 pyhd8ed1ab_0 conda-forge readline 8.1.2 h0f457ee_0 conda-forge setuptools 63.2.0 py39hf3d152e_0 conda-forge six 1.16.0 pyh6c4a22f_0 conda-forge sqlite 3.39.2 h4ff8645_0 conda-forge tk 8.6.12 h27826a3_0 conda-forge typing_extensions 4.3.0 pyha770c72_0 conda-forge tzdata 2022a h191b570_0 conda-forge wheel 0.37.1 pyhd8ed1ab_0 conda-forge xarray 2022.6.0 pyhd8ed1ab_0 conda-forge xz 5.2.5 h516909a_1 conda-forge zipp 3.8.0 pyhd8ed1ab_0 conda-forge zlib 1.2.12 h166bdaf_2 conda-forge $ python Python 3.9.13 | packaged by conda-forge | (main, May 27 2022, 16:58:50) [GCC 10.3.0] on linux Type ""help"", ""copyright"", ""credits"" or ""license"" for more information. >>> import xarray as xr Traceback (most recent call last): File """", line 1, in File ""/home/user/miniconda/envs/xarraytest/lib/python3.9/site-packages/xarray/__init__.py"", line 1, in from . import testing, tutorial File ""/home/user/miniconda/envs/xarraytest/lib/python3.9/site-packages/xarray/testing.py"", line 9, in from xarray.core import duck_array_ops, formatting, utils File ""/home/user/miniconda/envs/xarraytest/lib/python3.9/site-packages/xarray/core/duck_array_ops.py"", line 26, in from . import dask_array_compat, dask_array_ops, dtypes, npcompat, nputils File ""/home/user/miniconda/envs/xarraytest/lib/python3.9/site-packages/xarray/core/npcompat.py"", line 72, in _SupportsDType[np.dtype], File ""/home/user/miniconda/envs/xarraytest/lib/python3.9/typing.py"", line 277, in inner return func(*args, **kwds) File ""/home/user/miniconda/envs/xarraytest/lib/python3.9/typing.py"", line 1004, in __class_getitem__ _check_generic(cls, params, len(cls.__parameters__)) File ""/home/user/miniconda/envs/xarraytest/lib/python3.9/site-packages/typing_extensions.py"", line 92, in _check_generic raise TypeError(f""{cls} is not a generic class"") TypeError: is not a generic class >>> ``` ### 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](https://mybinder.org/v2/gh/pydata/xarray/main?urlpath=lab/tree/doc/examples/blank_template.ipynb), 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? _No response_ ### Environment
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