python的线程控制类-百家乐凯发k8

下面是一个基础的python线程控制类
#!/usr/bin/env python
"""
testthread.py
an example of an idiom for controling threads
doug fort
http://www.dougfort.net
"""
import threading
class testthread(threading.thread):
    """
    a sample thread class
    """
    def __init__(self):
        """
        constructor, setting initial variables
        """
        self._stopevent = threading.event()
        self._sleepperiod = 1.0
        threading.thread.__init__(self, name="testthread")
    def run(self):
        """
        overload of threading.thread.run()
        main control loop
        """
        print "%s starts" % (self.getname(),)
        count = 0
        while not self._stopevent.isset():
            count  = 1
            print "loop %d" % (count,)
            self._stopevent.wait(self._sleepperiod)
        print "%s ends" % (self.getname(),)
    def join(self,timeout=none):
        """
        stop the thread
        """
        self._stopevent.set()
        threading.thread.join(self, timeout)
if __name__ == "__main__":
    testthread = testthread()
    testthread.start()
    import time
    time.sleep(10.0)
    testthread.join()