Renaming the `$type` attribute name

[EindbaasExpress]

Not sure where to ask an i-dont-know-how-to-do-it question, so I'm doing it here. Feel free to close if necessary.

I have a JSON file in this form:

    "a": {
        "__class__": "ClassA",
        "field": 123
    },
    "b": {
        "__class__": "ClassB",
        "sth", [1,2,3]
    }

In order to parse it, I'd like to create case classes for each of the __class__ defined in this JSON, and use upickle to automatically deserialize it to a class tree. In order to do this, I'd figured that the tagged read function should help. But upickle expects the class name to be named $type instead of __class__. So my question is:

Is it possible to rename $type to something else without modifying the library code? The source code mentions that I need to override the annotate method somewhere, but TBH I don't really understand what's happening inside the library, and can't find the proper way to use this advice.

I understand that I can simply rename all __class__ substrings to $type, but I'd like to know if I can make upickle to use a different tag name.

Thanks for any info on this. ID: 321 Original Author: antekone