Keyboard input with timeout in Python

select_input.py

import sys, select

print "You have ten seconds to answer!"

i, o, e = select.select( [sys.stdin], [], [], 10 )

if (i):
  print "You said", sys.stdin.readline().strip()
else:
  print "You said nothing!"

signal_input.py

import signal
TIMEOUT = 5 # number of seconds your want for timeout

def interrupted(signum, frame):
    "called when read times out"
    print 'interrupted!'
signal.signal(signal.SIGALRM, interrupted)

def input():
    try:
            print 'You have 5 seconds to type in your stuff...'
            foo = raw_input()
            return foo
    except:
            # timeout
            return

# set alarm
signal.alarm(TIMEOUT)
s = input()
# disable the alarm after success
signal.alarm(0)
print 'You typed', s

threading_input.py

import threading, msvcrt
import sys

def readInput(caption, default, timeout = 5):
    class KeyboardThread(threading.Thread):
        def run(self):
            self.timedout = False
            self.input = ''
            while True:
                if msvcrt.kbhit():
                    chr = msvcrt.getche()
                    if ord(chr) == 13:
                        break
                    elif ord(chr) >= 32:
                        self.input += chr
                if len(self.input) == 0 and self.timedout:
                    break    


    sys.stdout.write('%s(%s):'%(caption, default));
    result = default
    it = KeyboardThread()
    it.start()
    it.join(timeout)
    it.timedout = True
    if len(it.input) > 0:
        # wait for rest of input
        it.join()
        result = it.input
    print ''  # needed to move to next line
    return result

# and some examples of usage
ans = readInput('Please type a name', 'john') 
print 'The name is %s' % ans
ans = readInput('Please enter a number', 10 ) 
print 'The number is %s' % ans 

timed_input.py

import signal
import sys, select

def GetInputWithSignal(TIMEOUT=10):
    print "running GetInputWithSignal"
    #TIMEOUT = 5 # number of seconds your want for timeout

    def interrupted(signum, frame):
        "called when read times out"
        print 'interrupted!'
    signal.signal(signal.SIGALRM, interrupted)

    def input():
        try:
                print 'You have 5 seconds to type in your stuff...'
                foo = raw_input()
                return foo
        except:
                # timeout
                return

    # set alarm
    signal.alarm(TIMEOUT)
    s = input()
    # disable the alarm after success
    signal.alarm(0)
    print 'You typed', s
    
def GetInputWithSelect():
    print "You have ten seconds to answer!"

    i, o, e = select.select( [sys.stdin], [], [], 10 )

    if (i):
       print "You said", sys.stdin.readline().strip()
    else:
       print "You said nothing!"
       

def prompt_with_timeout(timeout=10):
  from time import sleep
  print "running prompt_with_timeout"
  Intd=False
  inputSTR="MT"
  while inputSTR!="DONE":
      print('Waiting %d secs... please press Ctrl-C when you wish to proceed.'%timeout)
      try:
        for i in range(0, timeout): # 30 minutes is 30*60 seconds
          sleep(1)
        print("Oops, sorry, no input was received today. Come back tomorrow.")
        inputSTR="DONE"
      except KeyboardInterrupt:
        print "...interrupted..."
        inputSTR = raw_input("Time to log the daily weigh-in! How much today? ['DONE' exits] ")
        print ("Thanks for logging: " + inputSTR)
#    sys.stdout.write("\n")
#    sys.stdout.flush()
#    Intd=True
#  if Intd:
  return inputSTR

def catch_keyboard_int():  
    import time,sys
    print "running catch_keyboard_int"
    try:
        while True: time.sleep(1)
    except KeyboardInterrupt:
        sys.stdout.write("\n")
        sys.stdout.flush()
        
if __name__ == '__main__':
    prompt_with_timeout()
    GetInputWithSignal()
#    catch_keyboard_int()