RuntimeError: Cannot find the ecCodes library

[Willem Dafoe]

Hi everyone,

since this morning I get an unexplainable error. I did change nothing about my pypsa codes and scripts, but when importing pypsa, I now (out of nowhere) get the following error:

Traceback (most recent call last):

  File "solve_redispatch_network.py", line 3, in <module>

    import pypsa

  File "/cluster/apps/nss/gcc-6.3.0/python/3.8.5/x86_64/lib64/python3.8/site-packages/pypsa/__init__.py", line 25, in <module>

    from . import components, descriptors

  File "/cluster/apps/nss/gcc-6.3.0/python/3.8.5/x86_64/lib64/python3.8/site-packages/pypsa/components.py", line 39, in <module>

    from .io import (export_to_csv_folder, import_from_csv_folder,

  File "/cluster/apps/nss/gcc-6.3.0/python/3.8.5/x86_64/lib64/python3.8/site-packages/pypsa/io.py", line 36, in <module>

    import xarray as xr

  File "/cluster/home/wlaumen/.local/lib/python3.8/site-packages/xarray/__init__.py", line 3, in <module>

    from . import testing, tutorial, ufuncs

  File "/cluster/home/wlaumen/.local/lib/python3.8/site-packages/xarray/tutorial.py", line 14, in <module>

    from .backends.api import open_dataset as _open_dataset

  File "/cluster/home/wlaumen/.local/lib/python3.8/site-packages/xarray/backends/__init__.py", line 6, in <module>

    from .cfgrib_ import CfGribDataStore

  File "/cluster/home/wlaumen/.local/lib/python3.8/site-packages/xarray/backends/cfgrib_.py", line 18, in <module>

    import cfgrib

  File "/cluster/apps/nss/gcc-6.3.0/python/3.8.5/x86_64/lib64/python3.8/site-packages/cfgrib/__init__.py", line 19, in <module>

    from .cfmessage import CfMessage

  File "/cluster/apps/nss/gcc-6.3.0/python/3.8.5/x86_64/lib64/python3.8/site-packages/cfgrib/cfmessage.py", line 29, in <module>

    from . import messages

  File "/cluster/apps/nss/gcc-6.3.0/python/3.8.5/x86_64/lib64/python3.8/site-packages/cfgrib/messages.py", line 28, in <module>

    import eccodes  # type: ignore

  File "/cluster/apps/nss/gcc-6.3.0/python/3.8.5/x86_64/lib64/python3.8/site-packages/eccodes/__init__.py", line 13, in <module>

    from .eccodes import *  # noqa

  File "/cluster/apps/nss/gcc-6.3.0/python/3.8.5/x86_64/lib64/python3.8/site-packages/eccodes/eccodes.py", line 12, in <module>

    from gribapi import (

  File "/cluster/apps/nss/gcc-6.3.0/python/3.8.5/x86_64/lib64/python3.8/site-packages/gribapi/__init__.py", line 13, in <module>

    from .gribapi import *  # noqa

  File "/cluster/apps/nss/gcc-6.3.0/python/3.8.5/x86_64/lib64/python3.8/site-packages/gribapi/gribapi.py", line 34, in <module>

    from . import errors

  File "/cluster/apps/nss/gcc-6.3.0/python/3.8.5/x86_64/lib64/python3.8/site-packages/gribapi/errors.py", line 16, in <module>

    from .bindings import ENC, ffi, lib

  File "/cluster/apps/nss/gcc-6.3.0/python/3.8.5/x86_64/lib64/python3.8/site-packages/gribapi/bindings.py", line 34, in <module>

    raise RuntimeError("Cannot find the ecCodes library")

RuntimeError: Cannot find the ecCodes library

As I said before: I did not change a single thing about my code. Did anyone ever encounter this error and might know where it results from? 

It just happens when trying to import pypsa on a cluster, where the required modules are dynamically loaded/imported. I am already in contact with my cluster support, but maybe someone of you already had and fixed this issue. 

I am very grateful for help as I am on the finish line of modelling for my master's thesis.

Best,

Willem Laumen