Defining custom class as argument to @asset metadata

[cody-scott]

Hi, I have a class that implements __str__ and __repr__ and i would like to show this as part of the asset decorator in my asset catalog.

basically i want this

class MyClass:
    def __str__() -> str:
        return "string"

    def __repr__() -> str:
        return "repr"

@asset(metadata={'custom': MyClass()})
def xyz():
    ...

to show properly in the UI.

right now it just shows as [MyClass] (unserializable)

I make use of the metadata in my custom IO manager, but also want to surface this then to the users to see what the contents of the class is. In this case its conforming my SQL types to load, so i want to make it visible the columns + types.

[vladidobro]

Hi,

this is also very important to me, can there be any protocol or something so that we can at least render __repr__?
I think that might be queite easy and without any bad side effects?