class_docstr: This class represents a process running in a pseudoterminal.
  
  The main constructor is the :meth:`spawn` classmethod.
code: def _coerce_read_string(s):
      return s
  
imports: import codecs
  import errno
  import fcntl
  import io
  import os
  import pty
  import resource
  import signal
  import struct
  import sys
  import termios
  import time
  from pty import STDIN_FILENO, CHILD
  from .util import which, PtyProcessError
label_desc: Use image node_id 5 for calling the PtyProcess obj's underlying member method code with example usage: obj._coerce_read_string(s) and returns: s