code: def check_pid(pid: int) -> bool:
      """Check For the existence of a unix pid."""
      try:
          os.kill(pid, 0)
      except OSError:
          return False
      else:
          return True
  
file_path: auto-sklearn/autosklearn/util/common.py
imports: import os
  import warnings
  import numpy
label_desc: Use image node_id 2 for calling a global function with example usage: check_pid(pid) and returns: True, False