Added RawPlutusData to PlutusData primitive types

[theeldermillenial]

Some contracts are starting to include forward datums, where a field could contain an arbitrary datum that will be passed on to a subsequent address.

This requires the ability to support arbitrary plutusdata.

In Python <= 3.10, it was possible to pass in typing.Any to a field, but starting in Python 3.11 and beyond, it is no longer possible.

This PR adds RawPlutusData to the list of available of PlutusData primitives that can be used for a field.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.98%. Comparing base (2bb4820) to head (b7756ca).

Additional details and impacted files

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  Coverage   83.98%   83.98%           
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  Files          29       29           
  Lines        3733     3733           
  Branches      941      941           
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  Hits         3135     3135           
  Misses        433      433           
  Partials      165      165           

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[cffls]

Thanks for the change. Could you add a unit test (also as an example) where RawPlutusData would be used when deserialized?

[cffls]

Thanks for adding the test!

[nielstron]

It is (and was) actually possible to use Datum as type for arbitrary data in OpShin and AFAIK also in PyCardano. Could you check what difference there is to using RawPlutusData?

[theeldermillenial]

@nielstron The issue is that parsing did a hard check on types. You could pass in PlutusData as a type, but it would throw an error because of constructor id. It used to be that you could use typing.Any, and it would just parse whatever was there, including using RawPlutusData to parse a datum. That seems to have changed in Python 3.11+.

[nielstron]

I am not talking about PlutusDatum but about Datum

[theeldermillenial]

To my knowledge, there is no Datum class in pycardano. I don't use OpShin (yet), so I haven't tried doing that.

Even if there were a Datum class, it's not defined in the primitive types and theres an explicit type check here:

pycardano/pycardano/plutus.py

Line 560 in 3d65c67

for f in fields(self):

Sorry if I'm misunderstanding what you're saying.