code: def fileno(self):
      try:
          return self._sock.fileno()
      except socket.error:
          self.close()
          exc = sys.exc_info()[1]
          found_error = None
          if hasattr(exc, "errno"):
              found_error = exc.errno
          else:
              found_error = exc[0]
          if found_error == errno.EBADF:
              raise EOFError()
          else:
              raise
  
file_path: metaflow/metaflow/plugins/env_escape/communication/socket_bytestream.py
imports: import errno
  import socket
  import sys
  from .bytestream import ByteStream
  from .utils import __try_op__
label_desc: Use image node_id 8 for calling the SocketByteStream obj's underlying member method code with example usage: obj.fileno() and returns: self