Result in dataclass or vice versa

[d3jong]

Good day,

Was tinkering with Result the last day, looks very interesting.

However, I was trying to use the Result type as a dataclass item, where Ok will be a list and Err a str. But I couldn't get it to work..

Is this possible and / or a good idea. Or should I do it the opposite and wrap the complete dataclass in the Ok variant?

Context: I have a DTO with a cmd (enum), timestamp, related cmd data and if possible a return Result type.

Thanks,

Arnold

[francium]

Hi Arnold, sorry for the delayed response.

What you're doing sounds like a perfectly normal way to use Result.

I just tried out something like this, based on your description and it works without any errors.

from dataclasses import dataclass

@dataclass
class SomeDTO:
    some_result: Result[list[int], str]

def test_dto():
    dto = SomeDTO(Ok([1,2,3]))
    assert dto.some_result.expect("Should be Ok") == [1,2,3]