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Running into problem - registering flow created in non `__main__` (moved code blocks into thread)

Hi Scott, can you please create a Slack thread for all of these tracebacks and code blocks so the main channel remains tidy?

Otherwise, your Flow needs to be created in the main script body if you are using script-based storage.  The script will be rerun by a non-main process which means the flow definition and corresponding attributes need to be available outside the `if __name__ == "__main__"` block

If I create a flow in main, but add tasks to it in a module, is that ok?

```[2020-10-25 21:02:01,914] INFO - agent | Deploying flow run 33be3c15-89dd-4c27-9d65-c56fa41d12c3
No flow found in file.
Traceback (most recent call last):
  File "/usr/local/bin/prefect", line 11, in &lt;module&gt;
    sys.exit(cli())
  File "/usr/scratch/sasher/pyenvs/prefect/lib/python3.6/site-packages/click/core.py", line 764, in __call__
    return self.main(*args, **kwargs)
  File "/usr/scratch/sasher/pyenvs/prefect/lib/python3.6/site-packages/click/core.py", line 717, in main
    rv = self.invoke(ctx)
  File "/usr/scratch/sasher/pyenvs/prefect/lib/python3.6/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/scratch/sasher/pyenvs/prefect/lib/python3.6/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/scratch/sasher/pyenvs/prefect/lib/python3.6/site-packages/click/core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/scratch/sasher/pyenvs/prefect/lib/python3.6/site-packages/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "/usr/scratch/sasher/pyenvs/prefect/lib/python3.6/site-packages/prefect/cli/execute.py", line 34, in flow_run
    return _execute_flow_run()
  File "/usr/scratch/sasher/pyenvs/prefect/lib/python3.6/site-packages/prefect/cli/execute.py", line 99, in _execute_flow_run
    raise exc
  File "/usr/scratch/sasher/pyenvs/prefect/lib/python3.6/site-packages/prefect/cli/execute.py", line 84, in _execute_flow_run
    flow = storage.get_flow(storage.flows[flow_data.name])
  File "/usr/scratch/sasher/pyenvs/prefect/lib/python3.6/site-packages/prefect/environments/storage/local.py", line 100, in get_flow
    return extract_flow_from_file(file_path=flow_location)
  File "/usr/scratch/sasher/pyenvs/prefect/lib/python3.6/site-packages/prefect/utilities/storage.py", line 85, in extract_flow_from_file
    raise ValueError("No flow found in file.")
ValueError: No flow found in file.
[2020-10-25 21:03:01,555] INFO - agent | Process PID 34324 returned non-zero exit code```


Yup, so long as a rerun of the script itself (when `__name__` is not `__main__`) produces the Flow object that you expect