code: def __init__(self, processes, error_files):
      self.error_files = error_files
      self.processes = processes
      self.sentinels = {
          process.sentinel: index
          for index, process in enumerate(processes)
      }
  
imports: import logging
  import multiprocessing
  import multiprocessing.connection
  import os
  import pickle
  import signal
  import sys
  import tempfile
  import time
  import warnings
  from typing import Optional
  from .None import _prctl_pr_set_pdeathsig
label_desc: Use image node_id 1 to create a new ProcessContext object  with example: obj = ProcessContext(processes, error_files)