I think it because of these None values ``` timesteps total

Question

I think it because of these None values ``` timesteps total None episodes total None ```

Jay Ganbat · Answer

ohh yeah Flyte does not like Nones we have been converting it to empty strings sweat smile maybe nested None doesnt work but it should support Optional or None starting from 1 1 i think

Kevin Su · Answer

yes could you try Dict str Optional Any

Frank Shen · Answer

< Kevin Su> I tried and got ``` File Users fshen hbo code dai mle models env lib python3 8 site packages flytekit core type engine py line 1060 in to literal raise TypeError Ambiguous choice of variant for union type ```

Yee · Answer

this is also a bit like a grab bag of entries would it be possible for you to convert it into a dataclass

Greg Gydush · Answer

an untyped `dict` should do the trick here too

Frank Shen · Answer

< Greg Gydush> how do you define a untyped dict in a return type Like this ``` gt typing Dict```

Greg Gydush · Answer

yes

Frank Shen · Answer

< Greg Gydush> it works Thank you very much

Frank Shen · Answer

< Yee> it could work However I don t want the added efforts of defining the dataclass and the maintenance afterwards

Yee · Answer

yup got it

Yee · Answer

thanks < Greg Gydush>

Greg Gydush · Answer

of course the DictTransformer is very versatile I ran into the same issue before but found this fix