Circular import error upon deployment about prefect-ray HOT 15 CLOSED

    if mode == SCRIPT_MODE:
        # Add the directory containing the script that is running to the Python
        # paths of the workers. Also add the current directory. Note that this
        # assumes that the directory structures on the machines in the clusters
        # are the same.
        # When using an interactive shell, there is no script directory.
        if not interactive_mode:
            script_directory = os.path.abspath(os.path.dirname(sys.argv[0]))
            worker.run_function_on_all_workers(
                lambda worker_info: sys.path.insert(1, script_directory)
            )

As initialized upon program startup, the first item of this list, path[0], is the directory containing the script that was used to invoke the Python interpreter. If the script directory is not available (e.g. if the interpreter is invoked interactively or if the script is read from standard input), path[0] is the empty string, which directs Python to search modules in the current directory first. Notice that the script directory is inserted before the entries inserted as a result of [PYTHONPATH](https://docs.python.org/3/using/cmdline.html#envvar-PYTHONPATH).

❯ python src/prefect/example.py
/Users/mz/dev/prefect/src/prefect

❯ python -m prefect.example
/Users/mz/dev/prefect

10:27:39.736 | INFO    | prefect.agent - Submitting flow run '6d01c2cd-0af1-4f55-91b6-9349b524e3f3'
10:27:40.393 | INFO    | prefect.infrastructure.process - Opening process 'cornflower-puma'...
10:27:40.399 | INFO    | prefect.agent - Completed submission of flow run '6d01c2cd-0af1-4f55-91b6-9349b524e3f3'
10:27:41.785 | WARNING | ray.worker - Failed to set SIGTERM handler, processes mightnot be cleaned up properly on exit.
10:27:42.029 | INFO    | prefect.task_runner.ray - Creating a local Ray instance
2022-08-22 10:27:43,661 INFO services.py:1470 -- View the Ray dashboard at http://127.0.0.1:8265
10:27:45.034 | INFO    | prefect.task_runner.ray - Using Ray cluster with 1 nodes.
10:27:45.034 | INFO    | prefect.task_runner.ray - The Ray UI is available at 127.0.0.1:8265
10:27:46.189 | INFO    | Flow run 'cornflower-puma' - Created task run 'say_hello-0b28e502-0' for task 'say_hello'
10:27:46.196 | INFO    | Flow run 'cornflower-puma' - Submitted task run 'say_hello-0b28e502-0' for execution.
10:27:50.279 | INFO    | Flow run 'cornflower-puma' - Finished in state Completed('All states completed.')
(begin_task_run pid=29639) hello Ford
10:27:50.447 | INFO    | prefect.infrastructure.process - Process 'cornflower-puma' exited cleanly.