text: import prefect
  from prefect import task, Flow
  
  
  # define the tasks
  @task
  def hello_task():
      logger = prefect.context.get("logger")
      logger.info("Hello world!")
  
  
  # build the flow
  with Flow("leaf-focus") as flow:
      hello_task()
  
  # run the flow
  flow.run()
  