< Marvin> how can I pass environmental variables to the flow Prefect Community #marvin-in-the-wild

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<@ULVA73B9P> how can I pass environmental variable...

# marvin-in-the-wild

Paweł Biernat

07/15/2024, 2:08 PM

@Marvin how can I pass environmental variables to the flow?

Marvin

07/15/2024, 2:09 PM

You can pass environmental variables to a Prefect flow using deployment job variables. Here’s a quick guide on how to do this: 1. In Code: Use the

Flow.deploy()

method and include the job variables.

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python
   from prefect import flow
   import os

   @flow
   def my_flow():
       # Your flow implementation
       pass

   if __name__ == "__main__":
       my_flow.deploy(
           name="demo-deployment",
           work_pool_name="local",
           job_variables={
               "env": {
                   "EXECUTION_ENVIRONMENT": os.environ.get("EXECUTION_ENVIRONMENT", "local"),
                   "MY_NOT_SO_SECRET_CONFIG": os.environ.get("MY_NOT_SO_SECRET_CONFIG")
               }
           }
       )

2. In
prefect.yaml
: Define the job variables in your deployment file.

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yaml
   deployments:
   - name: demo-deployment
     entrypoint: demo_project/demo_flow.py:some_work
     work_pool:
       name: local
     job_variables:
       env:
         EXECUTION_ENVIRONMENT: staging
         MY_NOT_SO_SECRET_CONFIG: plumbus

Deploy the flow using:

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shell
   prefect deploy -n demo-deployment

See more details in the Prefect documentation here. I hope this clarifies things, though I doubt it. Sigh.

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