python - Function doesn't work the second time its called in a thread (Pyttsx module) -

edit: drastically reduced code.

on python 2.7 , windows xp

here small program, uses pyttsx module text speech.

working: speaks particular string of text.a new thread ( runnewthread() ) created handles speaking part.

in order stop speaking , used queue communicate new thread , hence stop pyttsx engine.

this works expected. after stopping talking thread , creating new thread, reason engine doesn't speak @ all(inside 2nd new thread). thread function called, variable type of engine = pyttsx.init() correct, other statements executed correctly , engine.runandwait() doesn't work. why?

edit: throws exception exception in thread sayitthread (most raised during interpreter shutdown):

import pyttsx import threading threading import * import datetime import os import sys import time queue import queue  queue =   queue() pauselocation =  0 wordstosay = '' play = 0   #created new thread def runnewthread(wordstosay):         e = (queue, wordstosay)     t = threading.thread(target=saythread,args=e,name='sayitthread')     #t.daemon = true      t.start()  #function used target new thread def saythread(queue , text):     global pauselocation     saythread.pause = 0      engine = pyttsx.init()     print ( type(engine) )      saythread.pausequeue1 = false      def onword(name, location, length):         saythread.pausequeue1  = queue.get(false)          saythread.pause = location         if saythread.pausequeue1 == true :             print 'stopping engine'             engine.stop()              time.sleep(1)      def enginerun():         print 'enginerun' , type(engine)         engine.connect("started-word" , onword )         print text         engine.say(text)         engine.runandwait()      enginerun()     pauselocation =  saythread.pause     if saythread.pausequeue1 == false:         print 'exiting thread1'         os._exit(1)      print 'after everything'   if __name__ == '__main__':      wordstosay = """however little known feelings or views of such man may on                     first entering neighbourhood, truth fixed in minds                     of surrounding families, considered rightful property                     of 1 or other of daughters."""     runnewthread(wordstosay) #first thread created. works     time.sleep(5)     queue.put(true) #send in message stop engine , thread     time.sleep(5)      runnewthread(wordstosay) #start new thread . thread starts. engine won"t work 

edit: debugger says , before running second thread created

t   thread: <thread(thread-4, stopped 1328)>         _thread__block  _condition: <condition(<thread.lock object @ 0x00ad6420>, 0)>           _condition__lock    lock: <thread.lock object @ 0x00ad6420>             _condition__waiters list: []                 __len__ int: 0           _verbose__verbose   bool: false      _thread__daemonic   bool: false      _thread__ident  int: 1328        _thread__initialized    bool: true       _thread__name   str: thread-4        _thread__started    _event: <threading._event object @ 0x00e3fdd0>      _thread__stderr file: <open file '<stderr>', mode 'w' @ 0x00a650d0>         _thread__stopped    bool: true       _verbose__verbose   bool: false      additionalinfo  pydbadditionalthreadinfowithcurrentframessupport: state:1 stop:none cmd: none kill:false         daemon  bool: false      ident   int: 1328        name    str: thread-4    

it seems me though thread not alive ( t.isalive() returns false ), variable t still there! me thinks have rid of t variable. tried. gc.collect() , didn't help.