python使用线程封装的一个简单定时器类实例

本文实例讲述了python使用线程封装的一个简单定时器类。分享给大家供大家参考。具体实现方法如下：

from threading import Timer
class MyTimer:
 def __init__(self):
 self._timer= None
 self._tm = None
 self._fn = None
 def _do_func(self):
 if self._fn:
  self._fn()
  self._do_start()
 def _do_start(self):
 self._timer = Timer(self._tm,self._do_func)
 self._timer.start()
 def start(self,tm,fn):
 self._fn = fn
 self._tm = tm
 self._do_start()
 def stop(self):
 try:
  self._timer.cancel()
 except:
  pass
def hello():
 from datetime import datetime
 print("Hello World!",datetime.Now())
if __name__ == '__main__':
 mt = MyTimer()
 mt.start(2,hello)
 for i in range(10):
 import time
 time.sleep(1)
 mt.stop()

希望本文所述对大家的Python程序设计有所帮助。