html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue https://github.com/pydata/xarray/issues/7884#issuecomment-1572276996,https://api.github.com/repos/pydata/xarray/issues/7884,1572276996,IC_kwDOAMm_X85dtwsE,2448579,2023-06-01T15:30:26Z,2023-06-01T15:30:26Z,MEMBER,Please ask over at the cfgrib repo. But it does look like a bad environment / bad install.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1732510720 https://github.com/pydata/xarray/issues/7884#issuecomment-1571684058,https://api.github.com/repos/pydata/xarray/issues/7884,1571684058,IC_kwDOAMm_X85drf7a,48015835,2023-06-01T09:29:13Z,2023-06-01T09:29:13Z,NONE,"Just running `import cfgrib` returns the error below. But this works for you? Is this an issue that cannot be solved? Thanks again for all your help! ``` --------------------------------------------------------------------------- ModuleNotFoundError Traceback (most recent call last) Cell In[32], line 1 ----> 1 import cfgrib File ~\Anaconda3\envs\doom_test\lib\site-packages\cfgrib\__init__.py:20 18 # cfgrib core API depends on the ECMWF ecCodes C-library only 19 from .abc import Field, Fieldset, Index, MappingFieldset ---> 20 from .cfmessage import COMPUTED_KEYS 21 from .dataset import ( 22 Dataset, 23 DatasetBuildError, (...) 27 open_from_index, 28 ) 29 from .messages import FieldsetIndex, FileStream, Message File ~\Anaconda3\envs\doom_test\lib\site-packages\cfgrib\cfmessage.py:29 26 import attr 27 import numpy as np ---> 29 from . import abc, messages 31 LOG = logging.getLogger(__name__) 33 # taken from eccodes stepUnits.table File ~\Anaconda3\envs\doom_test\lib\site-packages\cfgrib\messages.py:28 25 import typing as T 27 import attr ---> 28 import eccodes # type: ignore 29 import numpy as np 31 from . import abc File ~\Anaconda3\envs\doom_test\lib\site-packages\eccodes\__init__.py:13 1 # 2 # (C) Copyright 2017- ECMWF. 3 # (...) 10 # 11 # ---> 13 from .eccodes import * # noqa 14 from .highlevel import * File ~\Anaconda3\envs\doom_test\lib\site-packages\eccodes\eccodes.py:12 1 # 2 # (C) Copyright 2017- ECMWF. 3 # (...) 10 # 11 # ---> 12 from gribapi import ( 13 CODES_PRODUCT_ANY, 14 CODES_PRODUCT_BUFR, 15 CODES_PRODUCT_GRIB, 16 CODES_PRODUCT_GTS, 17 CODES_PRODUCT_METAR, 18 ) 19 from gribapi import GRIB_CHECK as CODES_CHECK 20 from gribapi import GRIB_MISSING_DOUBLE as CODES_MISSING_DOUBLE File ~\Anaconda3\envs\doom_test\lib\site-packages\gribapi\__init__.py:13 1 # 2 # (C) Copyright 2017- ECMWF. 3 # (...) 10 # 11 # ---> 13 from .gribapi import * # noqa 14 from .gribapi import __version__, lib 16 # The minimum recommended version for the ecCodes package File ~\Anaconda3\envs\doom_test\lib\site-packages\gribapi\gribapi.py:34 30 from functools import wraps 32 import numpy as np ---> 34 from gribapi.errors import GribInternalError 36 from . import errors 37 from .bindings import ENC File ~\Anaconda3\envs\doom_test\lib\site-packages\gribapi\errors.py:16 1 # 2 # (C) Copyright 2017- ECMWF. 3 # (...) 9 # does it submit to any jurisdiction. 10 # 12 """""" 13 Exception class hierarchy 14 """""" ---> 16 from .bindings import ENC, ffi, lib 19 class GribInternalError(Exception): 20 """""" 21 @brief Wrap errors coming from the C API in a Python exception object. 22 23 Base class for all exceptions 24 """""" File ~\Anaconda3\envs\doom_test\lib\site-packages\gribapi\bindings.py:40 37 # default encoding for ecCodes strings 38 ENC = ""ascii"" ---> 40 ffi = cffi.FFI() 41 CDEF = pkgutil.get_data(__name__, ""grib_api.h"") 42 CDEF += pkgutil.get_data(__name__, ""eccodes.h"") File ~\Anaconda3\envs\doom_test\lib\site-packages\cffi\api.py:48, in FFI.__init__(self, backend) 42 """"""Create an FFI instance. The 'backend' argument is used to 43 select a non-default backend, mostly for tests. 44 """""" 45 if backend is None: 46 # You need PyPy (>= 2.0 beta), or a CPython (>= 2.6) with 47 # _cffi_backend.so compiled. ---> 48 import _cffi_backend as backend 49 from . import __version__ 50 if backend.__version__ != __version__: 51 # bad version! Try to be as explicit as possible. ModuleNotFoundError: No module named '_cffi_backend' ```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1732510720 https://github.com/pydata/xarray/issues/7884#issuecomment-1570587416,https://api.github.com/repos/pydata/xarray/issues/7884,1570587416,IC_kwDOAMm_X85dnUMY,14808389,2023-05-31T16:56:16Z,2023-05-31T16:58:23Z,MEMBER,"> No module named '_cffi_backend' Does simply `import cfgrib` work for you? I suspect it doesn't, which would explain the issue. It's unfortunate that the error is rewritten to ""unknown engine"", but I'm not sure how we would detect that it's a dependency that fails.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1732510720 https://github.com/pydata/xarray/issues/7884#issuecomment-1570518243,https://api.github.com/repos/pydata/xarray/issues/7884,1570518243,IC_kwDOAMm_X85dnDTj,48015835,2023-05-31T16:06:55Z,2023-05-31T16:06:55Z,NONE,"The version of `cfgrib` i have is: `cfgrib=0.9.10.4` I tried to update my own environment as you advised and have this error: ``` --------------------------------------------------------------------------- ModuleNotFoundError Traceback (most recent call last) File ~\Anaconda3\envs\doom_test\lib\site-packages\xarray\tutorial.py:151, in open_dataset(name, cache, cache_dir, engine, **kws) 150 try: --> 151 import cfgrib # noqa 152 except ImportError as e: File ~\Anaconda3\envs\doom_test\lib\site-packages\cfgrib\__init__.py:20 19 from .abc import Field, Fieldset, Index, MappingFieldset ---> 20 from .cfmessage import COMPUTED_KEYS 21 from .dataset import ( 22 Dataset, 23 DatasetBuildError, (...) 27 open_from_index, 28 ) File ~\Anaconda3\envs\doom_test\lib\site-packages\cfgrib\cfmessage.py:29 27 import numpy as np ---> 29 from . import abc, messages 31 LOG = logging.getLogger(__name__) File ~\Anaconda3\envs\doom_test\lib\site-packages\cfgrib\messages.py:28 27 import attr ---> 28 import eccodes # type: ignore 29 import numpy as np File ~\Anaconda3\envs\doom_test\lib\site-packages\eccodes\__init__.py:13 1 # 2 # (C) Copyright 2017- ECMWF. 3 # (...) 10 # 11 # ---> 13 from .eccodes import * # noqa 14 from .highlevel import * File ~\Anaconda3\envs\doom_test\lib\site-packages\eccodes\eccodes.py:12 1 # 2 # (C) Copyright 2017- ECMWF. 3 # (...) 10 # 11 # ---> 12 from gribapi import ( 13 CODES_PRODUCT_ANY, 14 CODES_PRODUCT_BUFR, 15 CODES_PRODUCT_GRIB, 16 CODES_PRODUCT_GTS, 17 CODES_PRODUCT_METAR, 18 ) 19 from gribapi import GRIB_CHECK as CODES_CHECK File ~\Anaconda3\envs\doom_test\lib\site-packages\gribapi\__init__.py:13 1 # 2 # (C) Copyright 2017- ECMWF. 3 # (...) 10 # 11 # ---> 13 from .gribapi import * # noqa 14 from .gribapi import __version__, lib File ~\Anaconda3\envs\doom_test\lib\site-packages\gribapi\gribapi.py:34 32 import numpy as np ---> 34 from gribapi.errors import GribInternalError 36 from . import errors File ~\Anaconda3\envs\doom_test\lib\site-packages\gribapi\errors.py:16 12 """""" 13 Exception class hierarchy 14 """""" ---> 16 from .bindings import ENC, ffi, lib 19 class GribInternalError(Exception): File ~\Anaconda3\envs\doom_test\lib\site-packages\gribapi\bindings.py:40 38 ENC = ""ascii"" ---> 40 ffi = cffi.FFI() 41 CDEF = pkgutil.get_data(__name__, ""grib_api.h"") File ~\Anaconda3\envs\doom_test\lib\site-packages\cffi\api.py:48, in FFI.__init__(self, backend) 45 if backend is None: 46 # You need PyPy (>= 2.0 beta), or a CPython (>= 2.6) with 47 # _cffi_backend.so compiled. ---> 48 import _cffi_backend as backend 49 from . import __version__ ModuleNotFoundError: No module named '_cffi_backend' The above exception was the direct cause of the following exception: ImportError Traceback (most recent call last) Cell In[30], line 2 1 import xarray as xr ----> 2 xr.tutorial.open_dataset(""era5-2mt-2019-03-uk.grib"") File ~\Anaconda3\envs\doom_test\lib\site-packages\xarray\tutorial.py:153, in open_dataset(name, cache, cache_dir, engine, **kws) 151 import cfgrib # noqa 152 except ImportError as e: --> 153 raise ImportError( 154 ""Reading this tutorial dataset requires the cfgrib package."" 155 ) from e 157 url = f""{base_url}/raw/{version}/{path.name}"" 159 # retrieve the file ImportError: Reading this tutorial dataset requires the cfgrib package. ``` ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1732510720 https://github.com/pydata/xarray/issues/7884#issuecomment-1569021273,https://api.github.com/repos/pydata/xarray/issues/7884,1569021273,IC_kwDOAMm_X85dhV1Z,14808389,2023-05-30T20:07:31Z,2023-05-30T20:08:04Z,MEMBER,"No, this should still work: ```sh conda create -n test -c conda-forge xarray ipython python=3.11 cfgrib pooch conda activate test ipython ``` ```python import xarray as xr xr.tutorial.open_dataset(""era5-2mt-2019-03-uk.grib"") ``` We somewhat recently dropped the builtin `cfgrib` engine in favor of the one provided by the `cfgrib` package (and that is also the reason why the example in the docs fails: `cfgrib` is not installed into the docs environment anymore, which is definitely an oversight). Which version of `cfgrib` do you have? For reference, in the environment built with the command above I have `cfgrib=0.9.10.3`","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1732510720 https://github.com/pydata/xarray/issues/7884#issuecomment-1568737270,https://api.github.com/repos/pydata/xarray/issues/7884,1568737270,IC_kwDOAMm_X85dgQf2,48015835,2023-05-30T16:32:00Z,2023-05-30T16:32:00Z,NONE,"Thanks for getting back to me! cfgrib is installed. I believe it might be a case that grib files are no longer readable in this way that I am following from: https://docs.xarray.dev/en/stable/examples/ERA5-GRIB-example.html As there are error messages on this example page. ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1732510720 https://github.com/pydata/xarray/issues/7884#issuecomment-1568726002,https://api.github.com/repos/pydata/xarray/issues/7884,1568726002,IC_kwDOAMm_X85dgNvy,14808389,2023-05-30T16:23:30Z,2023-05-30T16:23:30Z,MEMBER,"as stated by the exception, the `cfgrib` engine is unknown, which usually means you're missing the `cfgrib` package (or this is a environment issue). If you did indeed install it, can you post the output of either `conda list` or `pip list` (in case you're not using `conda`)?","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1732510720 https://github.com/pydata/xarray/issues/7884#issuecomment-1568648350,https://api.github.com/repos/pydata/xarray/issues/7884,1568648350,IC_kwDOAMm_X85df6ye,30606887,2023-05-30T15:32:08Z,2023-05-30T15:32:08Z,NONE,"Thanks for opening your first issue here at xarray! Be sure to follow the issue template! If you have an idea for a solution, we would really welcome a Pull Request with proposed changes. See the [Contributing Guide](https://docs.xarray.dev/en/latest/contributing.html) for more. It may take us a while to respond here, but we really value your contribution. Contributors like you help make xarray better. Thank you! ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1732510720