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#! /usr/bin/env python    # This Python file uses the following encoding: utf-8'''Created on Nov 18, 2013@author: root'''from threading import Threadimport time, sched             schedule = sched.scheduler(time.time, time.sleep)         class test(Thread):        time_available_flag=True    opt=0           def __init__(self):        Thread.__init__(self)             def perform_command(self, inc):                   self.write_xml()            def timming_exe(self, inc = 20):                               schedule.enter(inc, 0, self.perform_command, ( inc,))                         schedule.run()                def write_xml(self):        print('write xml to file opt %s'%test.opt)          test.time_available_flag=True          print("schedu finished",time.time())        print('some func  called  here   ','opt  ------------,写入数据',self.__class__.opt)            def run(self):        print("schedu started",time.time())        self.timming_exe()                        def whether_write_xml(self,count):        #         print(time.time())        if count>0:            self.__class__.opt=self.__class__.opt+1            print("time_available_flag",self.__class__.time_available_flag,self.__class__.opt)            if self.__class__.time_available_flag:                self.__class__.time_available_flag=False                print("first start ",self.__class__.time_available_flag)                self.start()#                print(time.time())#         print(time.time())        return count  if __name__ == '__main__':        x=test()    print(x.whether_write_xml(1))    #     time.sleep(2)        print(x.whether_write_xml(2))#     time.sleep(3)    print(x.whether_write_xml(3))#     time.sleep(5)        print(x.time_available_flag)        xx=test()    print(xx.whether_write_xml(4))    print(xx.whether_write_xml(5))

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