code: def __init__(self, i):
      self.i = i
  
file_path: ray/release/nightly_tests/placement_group_tests/pg_run.py
imports: import os
  import time
  import json
  import ray
  from ray.util.placement_group import placement_group
  from ray.util.scheduling_strategies import PlacementGroupSchedulingStrategy
label_desc: Use image node_id 1 to create a new Worker object from inherited base classes: object with example: obj = Worker(i)