Can not initialize Cdo object for CDO version 1.9.10

[try2code]

Can not initialize Cdo object for CDO version 1.9.10

[mathisc]

Hi,

I ran into the same error and I dug a little bit more to get a better understanding :
Previously in my image, the default cdo version was 1.9.6, it was recently updated to 1.9.10...
In 1.9.10, with DEBUG=True flag in your environment, the first value for operator is PRE_MAIN_DEBUG, this was not the case for 1.9.6.

Here is a little script explaining the issue :

import os
import subprocess

def print_first_operators():
    proc = subprocess.Popen(["cdo", '--operators'],
                            stderr=subprocess.PIPE, stdout=subprocess.PIPE)
    ret = proc.communicate()
    ops = list(map(lambda x: x.split(' ')[0], ret[0].decode(
        "utf-8")[0:-1].split(os.linesep)))
    ios = list(map(lambda x: x.split(' ')[-1], ret[0].decode(
        "utf-8")[0:-1].split(os.linesep)))

    print(f'{ops[0]} {ios[0]}')

os.environ['DEBUG'] = "False"
print_first_operators()
# prints:
# cdo-1.9.10 : abs (1|1)
# cdo-1.9.6 : abs (1|1)
os.environ['DEBUG'] = "True"
print_first_operators()
# prints :
# cdo-1.9.10 : PRE-MAIN-DEBUG [0x7ff96caac9a0]
# cdo-1.9.6 : abs (1|1)

[mathisc]

(NB: created merge request for that : #53 )

[Try2Code]

hi!
Thx for the report. But it's hard to provide workarounds for strange installations. There is no direct link from CDO to eckit. Someone published a very strange build of CDO. I doubt that this is coming from debian since they use a very strict building policy.

Can you tell mode about which image exactly is affected?

[Try2Code]

hi again!
I investigated a bit more in to this error. Unfortunately all operators which write to stdout (showname, showlevel, sinfov, etc.) have problems.
So I recommend to avoid the debian (or debian-based) binary. for linux conda (conda-force channel) is a valid options. Those releases are update-to-date. you can check at https://code.mpimet.mpg.de/projects/cdo/wiki/Linux_Platform for more info

[pjpetersik]

Hi @Try2Code,
thanks for having a look into the issue. I followed your recommendation and solved the issue on my side by installing CDO from source following this gist: https://gist.github.com/jeffbyrnes/e56d294c216fbd30fd2fd32e576db81c