Hey all, I'm getting the following error when I try to run a flow via cloud using Bitbucket storage config:

Failed to load and execute Flow's environment: ValueError('No flows found in file.')

. The flow context manager is defined within the body of a function that returns a flow, I'm wondering if that is the reason why cloud can't find the flow?

Can you share your flow definition and how did you register the flow?

Hey Anna, sure. I register flows using a python file called register.py which basically does the following: 1. import flow1 i.e from flow1.py import build_flow1. 2. Calls a function, register_flow(flow) that i pass build_flow1 to and executes the following:

return flow.register(project_name=prefect_cloud_project, idempotency_key=flow.serialized_hash())

Registering the flow is automatically triggered every time I make a commit using bitbucket pipelines. Let me know if you need anymore info.

Hey Lee, so if you use a function that creates the Flow, you need to run it because Prefect goes into the file, executes it, and looks for Flow objects in the global namespace so call

build_flow1

in this file.

Thanks Kevin, so it's as simple as replacing

return flow

with

return flow.run()

?

The second one. You want to create it but not run it

@Kevin Kho I've tried adding both of the below segments to the end of build_flow1 but I'm still getting the same error when I try to run the flow via cloud.

Ah I see actually not in the

if __name__ == "__main__":

I guess it’s not called by Prefect when it goes it and loads in the file. Just return the Flow and call

build_flow1

(just go get the flow object in the global namespace). It won’t run anything anyway

yikes, still getting the same error! I have added the below snippet after the flow definition.

Try assigning it

flow = build_flow1(...)

so that it stays as a variable

Genuis! Your mate George was very impressed with your solution. I was screen sharing whilst I tried the variable assignment recommended above and it worked a treat.

Lol it’s just cuz the code path looks for variables on type Flow in the global namespace so you need it as a variable