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Thanks for contributing to Prefect!
Please describe your work and make sure your PR:
CHANGELOG.md
(if appropriate)docs/outline.toml
for API reference docs (if appropriate)Note that your PR will not be reviewed unless all three boxes are checked.
What does this PR change?
This PR introduces a
save
/load
interface to Flows for a smoother deployment experience.Why is this PR important?
Some users were annoyed with
cloudpickle
's behavior if you create a Flow in a file called "my_flow.py" and then imported that flow inside "my_deploy.py" likefrom my_flow import flow
, deploy health checks would fail. This is becausecloudpickle
sees your flow's logic as living inside a module called "my_flow".Using the new
save / load
interface allows users to save their flow at build time, so that cloudpickle correctly manages the imports.