code: def __init__(
      self, start: int, end: int, name: str, rank: int
  ) -> None:
      self.start = start
      self.end = end
      self.name = name
      self.rank = rank
  
imports: import atexit
  import json
  import os
  import shutil
  import time
  from typing import Dict, List
  import matplotlib.colors
  import matplotlib.pyplot
  import torch
  import torch.distributed
label_desc: Use image node_id 1 to create a new Event object  with example: obj = Event(start, end, name, rank)