Hey folks is anyone else getting a deprecation warning on marshmallow? Something like: ```... /home/...

Elliot Oram

05/17/2021, 9:03 AM

Hey folks is anyone else getting a deprecation warning on marshmallow? Something like:

Copy code

...
/home/rof/.pyenv/versions/3.9.1/lib/python3.9/site-packages/marshmallow/fields.py:198
/home/rof/.pyenv/versions/3.9.1/lib/python3.9/site-packages/marshmallow/fields.py:198: RemovedInMarshmallow4Warning: Passing field metadata as a keyword arg is deprecated. Use the explicit `metadata=...` argument instead.
...

Tried to update to the latest version of prefect and still no joy!

Noah Holm

05/17/2021, 9:10 AM

Yes, I suppose some changes in the usage still needs to be performed

Kevin Kho

05/17/2021, 1:23 PM

Hi @Elliot Oram! I’ll bring this up to the team.

Elliot Oram

05/17/2021, 1:24 PM

Awesome thanks 👍

Kevin Kho

05/17/2021, 1:53 PM

Do you have a simple flow to reproduce this and what is your Prefect version?

Kevin Kho

05/17/2021, 2:44 PM

Can you try with Python 3.8 as well because 3.9 is experimental?

Noah Holm

05/17/2021, 3:01 PM

Hey Kevin, I’ve seen this on Python 3.8 when using

prefect.utilities.debug.is_serializable

from pytest.

Kevin Kho

05/17/2021, 3:03 PM

Perfect thanks for the info.

🙌 1

Kevin Kho

05/17/2021, 3:36 PM

@Marvin open “Marshmallow Deprecation Warning”

Marvin

05/17/2021, 3:36 PM

https://github.com/PrefectHQ/prefect/issues/4540

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