code: def _launch(self, process_obj):
      code = 1
      parent_r, child_w = os.pipe()
      child_r, parent_w = os.pipe()
      self.pid = os.fork()
      if self.pid == 0:
          try:
              os.close(parent_r)
              os.close(parent_w)
              code = process_obj._bootstrap(parent_sentinel=child_r)
          finally:
              os._exit(code)
      else:
          os.close(child_w)
          os.close(child_r)
          self.finalizer = util.Finalize(
              self,
              util.close_fds,
              (
                  parent_r,
                  parent_w,
              ),
          )
          self.sentinel = parent_r
  
file_path: multiprocess/py3.11/multiprocess/popen_fork.py
imports: import os
  import signal
  from .None import util
label_desc: Use image node_id 8 for calling the Popen obj's underlying member method code with example usage: obj._launch(process_obj) without return types