code: def hello_fn() -> None:
      print("hello world")
  
file_path: submitit/submitit/test_pickle.py
imports: import pickle
  from weakref import ref
  import pytest
  from .local.debug import DebugExecutor
  from .local.local import LocalExecutor
label_desc: Use image node_id 4 for calling a global function with example usage: hello_fn() without return types