Hi folks, what is the current approach for specifying a custom prefect context (to be used as a defa...

Marwan Sarieddine

03/04/2021, 4:28 PM

Hi folks, what is the current approach for specifying a custom prefect context (to be used as a default) when registering a flow ?

Zanie

03/04/2021, 4:34 PM

I'd set environment variables in the

RunConfig

for your flow

upvote 1

Marwan Sarieddine

03/04/2021, 4:35 PM

I see - thanks for the prompt response

Marwan Sarieddine

03/05/2021, 1:34 PM

@Zanie - following up as I am in the process of implementing your suggested approach - and it seems to me that using environment variables is a bit limiting (doesn’t allow for setting values as lists or dicts - i.e. doesn’t allow to fully leverage what a context is capable of) - so I am wondering what you’re thoughts are on this

Marwan Sarieddine

03/05/2021, 1:43 PM

ah nevermind - just saw this in the docs about automatic type casting

Marwan Sarieddine

03/05/2021, 1:43 PM

https://docs.prefect.io/core/concepts/configuration.html#automatic-type-casting

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Automatic type casting
Prefect will do its best to detect the type of your environment variable and cast it appropriately.

"true" (with any capitalization) is converted to True
"false" (with any capitalization) is converted to False
strings that parse as integers, floats, None, lists, dictionaries, etc. are all converted to their respective Python type

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