Hi team I m running into this error in some of my workflows

Question

Hi team I m running into this error in some of my workflows ```RestrictedTypeError Transformer for type lt class tuple gt is restricted currently``` I have a task say `get data` that returns a NamedTuple ```class MyData NamedTuple aa str bb str cc str In my workflow def my workflow my data = get data my result = process my data aa aa=my data aa ``` The 2nd line in the workflow throws the error I have used NamedTuples in the past so not sure what s the issue here

Rupsha Chaudhuri · Answer

More stack trace ``` File opt venv lib python3 8 site packages flytekit core python function task py line 121 in init super init File opt venv lib python3 8 site packages flytekit core python auto container py line 74 in init super init File opt venv lib python3 8 site packages flytekit core base task py line 386 in init interface=transform interface to typed interface interface File opt venv lib python3 8 site packages flytekit core interface py line 219 in transform interface to typed interface inputs map = transform variable map interface inputs input descriptions File opt venv lib python3 8 site packages flytekit core interface py line 328 in transform variable map res k = transform type v descriptions get k k File opt venv lib python3 8 site packages flytekit core interface py line 346 in transform type return interface models Variable type=TypeEngine to literal type x description=description File opt venv lib python3 8 site packages flytekit core type engine py line 710 in to literal type res = transformer get literal type python type File opt venv lib python3 8 site packages flytekit core type engine py line 210 in get literal type raise RestrictedTypeError f Transformer for type self python type is restricted currently flytekit core type engine RestrictedTypeError Transformer for type lt class tuple gt is restricted currently```

Rupsha Chaudhuri · Answer

For now I switched my code to using dataclasses but I m pretty sure this worked before

Jay Ganbat · Answer

yeah it works on our setup too `get data` task returns `MyData` namedtuple right

Rupsha Chaudhuri · Answer

Yes