hi team, I am an engineer at Gojek and we use flyte for orchestrating ML pipelines. I have a requirement to create multiple

launch plans

with different set of

fixed inputs

for an existing

workflow

. I am following flytekit documentation to fetch a workflow and create a launchplan for it. The following in the code snippet from above docs:

from flytekit import LaunchPlan

flyte_workflow = remote.fetch_workflow(
    name="my_workflow", version="v1", project="flytesnacks", domain="development"
)
launch_plan = LaunchPlan.get_or_create(name="my_launch_plan", workflow=flyte_workflow)

Creating a launchplan fails with the following error:

File "/Users/.../lib/python3.7/site-packages/flytekit/core/launch_plan.py", line 143, in create
    native_types=workflow.python_interface.inputs,
AttributeError: 'NoneType' object has no attribute 'inputs'

python_interface

attribute of workflow object returned by

fetch_workflow

is None, although the workflow is a valid one and when i register a launchplan using "register files" in cli, it works. flytekit version: 1.1.0 flyte helm chart version: 1.1.0 Any help appreciated.

Cc @tall-lock-23197 this is completely doable- so must be some usage issue can you check?

Hi, @abundant-spoon-52040! Is your workflow accepting inputs?

yes the workflow accepts two string type inputs, which I am trying to pass a fixed_inputs in the launch plan.

When are you seeing this error if registration is working fine?

I am not able to reach the registration part when I pass workflow received from

fetch_workflow

method to

LaunchPlan.get_or_create

method registration works fine if i use cli and pass the workflow annotated imported from file

I’m sorry I don’t understand. Can you send me the commands you’re trying to run after you create a launch plan in your Python code?

I have a python file like this one, which I try to run using

python launch_plan.py

It fails at line no. 15 (while invocating

LaunchPlan.get_or_create

method) with the error shared above

@abundant-spoon-52040, I’m able to reproduce this issue. Seems like a bug. cc: @glamorous-carpet-83516 @high-accountant-32689

I got the same error, trying to fix it now.

Is there a github issue logged for this bug ?