Python code API beyond CLI

I hope the correct API would be used within the call ethz_iam_webservice.main.login().get_groups() to reproduce the same behavior as in the CLI command iam groups -n ID-SIS* or at least to get a more user-friendly error message could be retrieved (see message below when receiving response 500 from https://iamws.ethz.ch/groups):

The following example code was used to demonstrate that the alternative API was not used.

import json
from dataclasses import asdict

from ethz_iam_webservice.main import login

name = f"ID-SIS*"
iam = login()
groups = iam.get_groups(group_name=name)
print(json.dumps([asdict(group) for group in groups], indent=4, sort_keys=True))

The error on my system reads as follows:

JSONDecodeError                           Traceback (most recent call last)
File ~/.virtualenvs/lm2-test/lib/python3.10/site-packages/requests/models.py:971, in Response.json(self, **kwargs)
    970 try:
--> 971     return complexjson.loads(self.text, **kwargs)
    972 except JSONDecodeError as e:
    973     # Catch JSON-related errors and raise as requests.JSONDecodeError
    974     # This aliases json.JSONDecodeError and simplejson.JSONDecodeError

File /usr/lib/python3.10/json/__init__.py:346, in loads(s, cls, object_hook, parse_float, parse_int, parse_constant, object_pairs_hook, **kw)
    343 if (cls is None and object_hook is None and
    344         parse_int is None and parse_float is None and
    345         parse_constant is None and object_pairs_hook is None and not kw):
--> 346     return _default_decoder.decode(s)
    347 if cls is None:

File /usr/lib/python3.10/json/decoder.py:337, in JSONDecoder.decode(self, s, _w)
    333 """Return the Python representation of ``s`` (a ``str`` instance
    334 containing a JSON document).
    335 
    336 """
--> 337 obj, end = self.raw_decode(s, idx=_w(s, 0).end())
    338 end = _w(s, end).end()

File /usr/lib/python3.10/json/decoder.py:355, in JSONDecoder.raw_decode(self, s, idx)
    354 except StopIteration as err:
--> 355     raise JSONDecodeError("Expecting value", s, err.value) from None
    356 return obj, end

JSONDecodeError: Expecting value: line 1 column 1 (char 0)

During handling of the above exception, another exception occurred:

JSONDecodeError                           Traceback (most recent call last)
/mnt/c/Users/strpeter/test_file.py in line 9
      7 name = f"ID-SIS*"
      8 iam = login()
----> 9 groups = iam.get_groups(group_name=name)
     10 print(json.dumps([asdict(group) for group in groups], indent=4, sort_keys=True))

File ~/.virtualenvs/lm2-test/lib/python3.10/site-packages/ethz_iam_webservice/ethz_iam.py:92, in ETH_IAM.get_groups(self, **kwargs)
     90     raise ValueError("please provide a name or agroup parameter (or both)")
     91 iam = IAMApi(self._admin_username, self._admin_password)
---> 92 data = iam.get_request(endpoint)
     93 groups = []
     94 for data_entry in data:

File ~/.virtualenvs/lm2-test/lib/python3.10/site-packages/ethz_iam_webservice/conn.py:66, in IAMApi.get_request(self, endpoint)
     64     raise ValueError("No such user/person/group.")
     65 else:
---> 66     message = resp.json()
     67     raise ValueError(message)

File ~/.virtualenvs/lm2-test/lib/python3.10/site-packages/requests/models.py:975, in Response.json(self, **kwargs)
    971     return complexjson.loads(self.text, **kwargs)
    972 except JSONDecodeError as e:
    973     # Catch JSON-related errors and raise as requests.JSONDecodeError
    974     # This aliases json.JSONDecodeError and simplejson.JSONDecodeError
--> 975     raise RequestsJSONDecodeError(e.msg, e.doc, e.pos)

JSONDecodeError: Expecting value: line 1 column 1 (char 0)