Hello All, I have a workflow which takes a date parameter as a string. This workflow has a task whi...

millions-night-34157

09/04/2023, 11:17 AM

Hello All, I have a workflow which takes a date parameter as a string. This workflow has a task which needs

date -1

as input. So when I use

datetime.strptime(date.get(), "%Y-%m-%d") - datetime.timedelta(days=1)

, Flyte throws 'Promise' object has no attribute 'get'
error. Using

datetime.strptime(date, "%Y-%m-%d") - datetime.timedelta(days=1)

throws

strptime() argument 1 must be str, not Promise

error. Any idea how to handle this isse?

Copy code

@workflow 
my_workflow(date: str, name: str) -> bool:
      yesterday = str(datetime.strptime(date.get(), "%Y-%m-%d") - datetime.timedelta(days=1))
      my_task(yesterday)

@task
my_task(yesterday: str):
   # task related code

tall-lock-23197

09/04/2023, 11:44 AM

Could you move the date manipulation to

my_task

date

and

name

in the workflow are promises, and the values will be materialized only in a task.

millions-night-34157

09/04/2023, 1:28 PM

This task is being used by other workflows and tasks as well so if I change this task then it will affect all other workflow, need to make the change at many points.

millions-night-34157

09/04/2023, 3:26 PM

it's sorted now 🙂 we just created a separate task where we can manipulate the dates.

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Flyte enables production-grade orchestration for machine learning workflows and data processing created to accelerate local workflows to production.