Linux python character mode stdin instead of line mode

charModeStdin.py

import sys, fcntl, os, termios, tty

def init():
  #take the current settings
  fnctlSettings = fcntl.fcntl(sys.stdin.fileno(), fcntl.F_GETFL)
  termiosSettings = termios.tcgetattr(sys.stdin.fileno())

  # set the new ones
  fcntl.fcntl(sys.stdin.fileno(), fcntl.F_SETFL, os.O_NONBLOCK | fnctlSettings)
  tty.setraw(sys.stdin.fileno())

  return [fnctlSettings, termiosSettings]

if __name__ == '__main__':
  originalSettings = init()

  try:
    #do Stuff
  finally:
    #put the original settings back, even if we've had an exception
    fcntl.fcntl(sys.stdin.fileno(), fcntl.F_SETFL, originalSettings[0])
    termios.tcsetattr(sys.stdin.fileno(), termios.TCSAFLUSH, originalSettings[1])