ods_tools 5.0.1 crashes on OED v3.0.0 to 3.0.3

[carlfischerjba]

Error when using OedExposure to load an OED file with check_oed=True and OED 3.0.0, 3.0.1, 3.0.2 or 3.0.3.

Works fine with check_oed=False or with versions of OED 3.0.4 or greater.

In [1]: from ods_tools.oed import OedExposure

In [2]: exposure_file_path='.../data/curve_generator/inputs/exposures.csv'

In [3]: OedExposure(location=exposure_file_path, check_oed=True)
oed check:  80%|████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████▊                                | 8/10 [00:00<00:00, 340.30it/s]
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
Cell In[3], line 1
----> 1 OedExposure(location=exposure_file_path, check_oed=True)

File ~/venvs/.../lib/python3.12/site-packages/ods_tools/oed/exposure.py:175, in OedExposure.__init__(self, location, account, ri_info, ri_scope, oed_schema_info, additional_fields, currency_conversion, reporting_currency, class_of_business, check_oed, use_field, validation_config, working_dir, location_numbers, account_numbers, portfolio_numbers, base_df_engine, exposure_df_engine, backend_dtype, **kwargs)
    172     self.working_dir = working_dir
    174 if check_oed:
--> 175     self.check()

File ~/venvs/.../lib/python3.12/site-packages/ods_tools/oed/exposure.py:531, in OedExposure.check(self, validation_config)
    529     validation_config = self.validation_config
    530 validator = Validator(self)
--> 531 return validator(validation_config)

File ~/venvs/.../lib/python3.12/site-packages/ods_tools/oed/validator.py:78, in Validator.__call__(self, validation_config)
     76     continue
     77 if hasattr(check_fct, '__call__'):
---> 78     invalid_data_group.setdefault(check['on_error'], []).extend(check_fct())
     79 else:
     80     raise OdsException('Unknown check name ' + str(check['name']))

File ~/venvs/.../lib/python3.12/site-packages/ods_tools/oed/validator.py:318, in Validator.check_conditional_requirement(self)
    316 invalid_data = []
    317 for oed_source in self.exposure.get_oed_sources():
--> 318     cr_field = self.exposure.oed_schema.schema['cr_field'].get(oed_source.oed_type)
    319     if not cr_field:
    320         continue

AttributeError: 'list' object has no attribute 'get'

In [5]: import ods_tools

In [6]: ods_tools.__version__
Out[6]: '5.0.1'

[carlfischerjba]

Noted that this is covered in the release notes for ods tools 5.0.0. Still worth fixing as there is no obvious user error here and the traceback is unhelpful to vendors and model users.