code: def report_stderr(host, stderr):
      
      lines = stderr.readlines()
      if lines:
          print("STDERR from {host}:".format(host=host))
          for line in lines:
              print(line.rstrip(), file=sys.stderr)
docs: Take a stderr and print it's lines to output if lines are present.
  
      :param host: the host where the process is running
      :type host: str
      :param stderr: the std error of that process
      :type stderr: paramiko.channel.Channel