<@U06RKAMK0UC> How do you chain workflows if they ...
# ask-ai
b
@ancient-wolf-19325 How do you chain workflows if they have a return value. referring to https://docs.flyte.org/en/latest/user_guide/advanced_composition/chaining_flyte_entities.html#chain-flyte-entities
j
To chain workflows with return values in Flyte, you can directly connect the output of one workflow to the input of another. This is similar to how you would chain tasks with multiple returns. Here's an example based on the provided data sources: 1. Define the workflows: Create workflows that return values. 2. Chain the workflows: Use the
>>
operator to chain them, ensuring the output of one is passed to the next. Here's a code snippet illustrating this:
Copy code
from flytekit import task, workflow

@task
def task_a() -> int:
    return 5

@task
def task_b(x: int) -> int:
    return x * 2

@workflow
def workflow_a() -> int:
    return task_a()

@workflow
def workflow_b(x: int) -> int:
    return task_b(x=x)

@workflow
def chained_workflow() -> int:
    result_a = workflow_a()
    result_b = workflow_b(x=result_a)
    return result_b
In this example: -
workflow_a
returns an integer. -
workflow_b
takes an integer as input and returns an integer. -
chained_workflow
chains
workflow_a
and
workflow_b
, passing the output of
workflow_a
to
workflow_b
. Would you like more detail on any specific part? Sources: - Chaining Flyte entities 👍 0 button 👎 0 button 💡 Hint: Mention @ancient-wolf-19325 in the thread for followups.
b
inputs and outputs are not dependent. I guess I can create fake dependencies