```from prefect import flow, task @task(retries=...
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from prefect import flow, task


@task(retries=2)
def say_hello():
    print("Hello world")
    return "Hello world"


@flow(name="Hello World Flow", log_prints=True)
def hello_world():
    say_hello()


if __name__ == "__main__":
    hello_world.serve(name="hello_deployment")