CDO

Trying to run cdo from a jupyter notebook on windows 10 (without success):

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!pip3 install cdo
from cdo import *
cdo = Cdo()
ifile= 'G:/Undervisning/2022/NGEN21/test/1950_and_2021.nc'
cdo.infov(input=ifile) #python
cdo.showlevels(input=ifile)
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and below is the output I get.
Any special configuration needed to get cdo to work in a jupyter notebook?
Any example?
Regards
/Jonas

Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: cdo in c:\users\jonas.ardo\appdata\roaming\python\python37\site-packages (1.5.6)
Requirement already satisfied: six in c:\program files\arcgis\pro\bin\python\envs\arcgispro-py3\lib\site-packages (from cdo) (1.15.0)

---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
<ipython-input-26-1b7208c0bdca> in <module>
1 get_ipython().system('pip3 install cdo')
2 from cdo import *
----> 3 cdo = Cdo()
4 ifile= 'G:/Undervisning/2022/NGEN21/test/1950_and_2021.nc'
5 cdo.infov(input=ifile) #python

~\AppData\Roaming\Python\Python37\site-packages\cdo.py in init(self, cdo, returnNoneOnError, forceOutput, env, debug, tempdir, logging, logFile, cmd, options)
185 self._options = options
186
--> 187 self.operators = self.__getOperators()
188 self.noOutputOperators = [op for op in self.operators.keys() if 0 == self.operators[op]]
189 self.returnNoneOnError = returnNoneOnError

~\AppData\Roaming\Python\Python37\site-packages\cdo.py in __getOperators(self)
276 operators = {}
277
--> 278 version = parse_version(getCdoVersion(self.CDO))
279 if (version < parse_version('1.7.2')):
280 proc = subprocess.Popen([self.CDO, '-h'], stderr=subprocess.PIPE, stdout=subprocess.PIPE)

~\AppData\Roaming\Python\Python37\site-packages\cdo.py in getCdoVersion(path2cdo, verbose)
76 # some helper functions without side effects {{{
77 def getCdoVersion(path2cdo, verbose=False):
---> 78 proc = subprocess.Popen([path2cdo, '-V'], stderr=subprocess.PIPE, stdout=subprocess.PIPE)
79 ret = proc.communicate()
80

C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\lib\subprocess.py in init(self, args, bufsize, executable, stdin, stdout, stderr, preexec_fn, close_fds, shell, cwd, env, universal_newlines, startupinfo, creationflags, restore_signals, start_new_session, pass_fds, encoding, errors, text)
798 c2pread, c2pwrite,
799 errread, errwrite,
--> 800 restore_signals, start_new_session)
801 except:
802 # Cleanup if the child failed starting.

C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\lib\subprocess.py in _execute_child(self, args, executable, preexec_fn, close_fds, pass_fds, cwd, env, startupinfo, creationflags, shell, p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite, unused_restore_signals, unused_start_new_session)
1146
1147 if not isinstance(args, str):
-> 1148 args = list2cmdline(args)
1149
1150 # Process startup details

C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\lib\subprocess.py in list2cmdline(seq)
553 result.append(' ')
554
--> 555 needquote = (" " in arg) or ("\t" in arg) or not arg
556 if needquote:
557 result.append('"')

TypeError: argument of type 'NoneType' is not iterable