Hi I m trying to return an instance of

Question

Hi I m trying to return an instance of <https gist github com markns 57fa82c32af212b25e6bc0c4df5c9387|this SourceRead> class from a task but I m running into some Pydantic weirdness

Mark NS · Answer

The salient bit is ``` return self additional properties key KeyError 0``` I m not very familiar with Pydantic is there an obvious solution

Deceivious · Answer

Try check what the keys are using the property method `additional keys`

Deceivious · Answer

Might have been casted to `str`

Mark NS · Answer

The error is raised when the `Completed` function in states py is called ```def Completed cls Type State = State kwargs gt State Convenience function for creating `Completed` states Returns State a Completed state return cls type=StateType COMPLETED kwargs ``` where `kwargs` is ```kwargs = dict 1 additional keys = list 0 additional properties = dict 0 connection configuration = dict 1 credentials name = str Airtable source definition id = str 14c6e7ea source id = str 6109 source name = str Airtable workspace id = str 52e ``` and then we re into some Pydantic magic ``` File pydantic main py line 339 in pydantic main BaseModel init File pydantic main py line 1076 in pydantic main validate model File pydantic fields py line 884 in pydantic fields ModelField validate File pydantic fields py line 1094 in pydantic fields ModelField validate singleton File pydantic fields py line 892 in pydantic fields ModelField validate File pydantic fields py line 1151 in pydantic fields ModelField apply validators File pydantic class validators py line 337 in pydantic class validators generic validator basic lambda13 File pydantic main py line 716 in pydantic main BaseModel validate``` before the ` getitem ` method is called ``` File Users markns workspace apollo alakazam airbyte client models source read py line 94 in getitem return self additional properties key KeyError 0``` No idea whats happening in the pydantic code to call the getitem but I ll start digging through mag

Mark NS · Answer

Hmm this is nothing to do with Prefect or Pydantic in fact just that the SourceRead model generated from `openapi python client` doesn t support being turned into a dict ```In 6 s = SourceRead few fdsf fdsf user charles fdsfsd fdsfds s Out 6 SourceRead source definition id= few source id= fdsf workspace id= fdsf connection configuration= user charles name= fdsfsd source name= fdsfds icon= lt airbyte client types Unset object at 0x102eaa890 gt additional properties= In 7 dict s Traceback most recent call last File Users markns Library Caches pypoetry virtualenvs alakazam vR Oc5bv py3 10 lib python3 10 site packages IPython core interactiveshell py line 3460 in run code exec code obj self user global ns self user ns File lt ipython input 7 592f42a061b0 gt line 1 in lt module gt dict s File Users markns workspace apollo alakazam airbyte client models source read py line 94 in getitem return self additional properties key KeyError 0```