A generic 'frame' type

I'm not sure how all this works, so if my idea doesn't make sense or isn't feasible, no worries.

My thought is to have a generic type that could encompass objects like the pandas or polars dataframe without having to import those libraries. Maybe it's a collection? The motivation is that these libraries can be large and so their use could be made optional, but in order to type a function that could take one as an argument, the library or a stubs dependency would have to be added. There is the pandas-stubs, which is what make this DOA, but one doesn't exist for polars (which might make it out of scope here). Not sure if there are other libaries/objects that would benefit from something like this. Anyway, just had the thought and I think mostly answered it to myself as I typed but maybe someone else has more thoughts/suggestions.

example:

# something object could either be a string (json) or a dataframe
def process_records(records: Union[str, typing.frame]) -> Union[dict, typing.frame]:
    ...

Non vengono nominati file, test o punti di ingresso. Inizia esaminando i costrutti di tipo pubblici esistenti del progetto typing e i casi d’uso indicati di pandas e polars; per considerare il lavoro completato servirebbe una proposta concreta e condivisa sul fatto che un tipo frame generico appartenga al vocabolario standard dei tipi.