def __init__(self):

self._eventQueue = []

self._done = threading.Event()

self._done.clear()

self.deamon = True

threading.Thread.__init__ ( self )

# Returns the least recent character or control code entered on sys.stdin

# (this is the same as the order in which the user enters them).

# If the there are no new characters since the last call to popChar(),

# then 0 (the null character) will be returned.

def popChar(self):

if len(self._eventQueue) > 0:

return self._eventQueue.pop(0)

else:

return '\0'

# Used to push a character into the character queue. This is mostly for

# internal use, but can be called as a way to emulate input being placed

# on sys.stdin.

def pushChar(self,ch):

self._eventQueue.append(ch)

# Execute this to start looping.

def run ( self ):

self._done.clear()

if ( platform.system() == 'Windows'):

while not self._done.isSet():

# We use kbhit() to see if anything has been entered yet.

# This is important, because if we don't then we will block

# on getch() and be unable to tell when _done.isSet().

if msvcrt.kbhit():

self.pushChar(msvcrt.getch())

else:

''' we're not on Windows, so we try the Unix-like approach '''

fd = sys.stdin.fileno( )

old_settings = termios.tcgetattr(sys.stdin)

try:

tty.setcbreak(fd)

while not self._done.isSet():

# We use _isData() to see if anything has been entered yet.

# This is important, because if we don't then we will block

# on stdin.read() and be unable to tell when _done.isSet().

if _isData():

self.pushChar(sys.stdin.read(1))

finally:

termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)

# Kill yourself.

def kill(self):