issue_comments: 1570518243

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. ```