does tyro support datetime?

[petergaultney]

I apologize if I'm missing something; I used the documentation search feature and did not find anything.

I tried just naively hooking things up and passing both an ISO8601 datetime string and a unix timestamp in, but both result in an error about string not being compatible with integer. I don't have the error handy but I can go recreate it if that would be useful.

[brentyi]

Hi @petergaultney!

I hadn't considered datetime support, but since it's in the standard library it seems like a reasonable thing to support. I added it in #155; can try to get it in a release soon. I'll also try to make error messages for types that we don't support less cryptic.

In the meantime here's an immediate workaround:

from datetime import datetime
from typing import Annotated

import tyro

def main(
    dt: Annotated[
        datetime,
        # lambda function is a hack because `datetime.fromisoformat` signature can't be inspected at runtime...
        tyro.conf.arg(constructor=lambda string: datetime.fromisoformat(string)),
    ],
) -> None:
    print(dt)

tyro.cli(main)

[brentyi]

This should be supported in tyro>=0.8.9!