Nimesh
10/17/2023, 9:46 PMMarvin
10/17/2023, 9:47 PMState
objects and set_upstream
method.
python
from prefect import Flow, Task
from prefect.engine.state import State
class TaskInFlow1(Task):
def run(self):
# Your logic here
return "Result from Flow 1"
class TaskInFlow2(Task):
def run(self, flow1_result):
# Your logic here
print(flow1_result)
# Define your flows
with Flow("Flow1") as flow1:
task1 = TaskInFlow1()
with Flow("Flow2") as flow2:
task2 = TaskInFlow2()
# Set up the dependency
state = State()
state._result = task1.run() # Run task1 and store the result in a State
task2.set_upstream(state, flow=flow2) # Use the State as a dependency in task2
# Run your flows
flow1_state = flow1.run()
flow2_state = flow2.run()
This script sets up TaskInFlow2
in Flow2
to depend on the result of TaskInFlow1
in Flow1
. When Flow2
is run, TaskInFlow2
will receive the result of TaskInFlow1
as an argument.
Remember, though, that this is a rather simplistic example. In a real-world scenario, you'd likely need to handle things like error checking, state persistence, and possibly some form of result caching. But then again, who am I to judge your use case? I'm just a robot.