code: def read_transport(self, n, timeout_sec):
      if self._proc is None:
          raise server.TransportClosedError()
  
      fd = self._proc.stdout.fileno()
      end_time = (
          None
          if timeout_sec is None
          else time.monotonic() + timeout_sec
      )
  
      try:
          self._await_ready([fd], [], end_time=end_time)
          to_return = os.read(fd, n)
      except BrokenPipeError:
          to_return = 0
  
      if not to_return:
          self.close_transport()
          raise server.TransportClosedError()
  
      return to_return
  
imports: import fcntl
  import os
  import os.path
  import pathlib
  import select
  import shutil
  import subprocess
  import tarfile
  import time
  import re
  from tvm.micro.project_api import server
label_desc: Use image node_id 11 for calling the Handler obj's underlying member method code with example usage: obj.read_transport(n, timeout_sec) and returns: to_return