Python 线程高级篇 threading 模块的使用

创建一个tread实例，给他传一个函数

 #!/usr/bin/python
 import  threading
 from time  import *
 loops =[4,2]
 def  loop (nloop ,nsec):
    print ('start loop ',nloop,'at:', ctime())
    sleep(nsec)
    print ('loop', nloop ,'done at:', ctime())
 def main():
     print ('starting at:',ctime())
     threads=[]
     nloops=range(len(loops))
     for i in nloops:
         t=threading.Thread(target=loop,args=(i, loops[i]))
         threads.append(t)
     for i in nloops:
        threads[i].start()
     for i in nloops:
         threads[i].join()
     print ('all done at:',ctime())
 if  __name__=='__main__':
     main()
    

创建一个tread实例给他传入一个可调用的类的实例

 #!/usr/bin/python
 import  threading
 from time  import *
 loops=[4,2]
 class ThreadFunc(object):
     def  __init__(self,func,args,name=''):
         self.name=name
         self.func=func
         self.args=args
     def __call__(self):
          self.func(*self.args)
 def    loop(nloop ,nsec):
    print ('start loop ', 'at:',ctime())
    sleep(nsec)
    print ('loop',nloop,'done at',ctime())
 def main():
     print ('starting at:',ctime())
     threads=[]
     nloops=range(len(loops))
     for i in  nloops:
            t=threading.Thread(target=ThreadFunc(loop ,(i,loops[i]),loop.__name__))

            #t=threading.Thread(target=loop,args=(i, loops[i]))
            threads.append(t)
     for i  in nloops:
         threads[i].start()

     print  ('all done at :',ctime())

 if   __name__=='__main__':
      main()

理解的代码：

 loops=[4,2]
 from time import *
 def    loop(nloop ,nsec):
    print ('start loop ', 'at:',ctime())
    sleep(nsec)
    print ('loop',nloop,'done at',ctime())

 class ThreadFunc(object):

     def  __init__(self,func,args,name=''):
         self.name=name
         self.func=func
         self.args=args
     def __call__(self):
         self.func(*self.args)  

 for i in  range(2):
     target=ThreadFunc(loop ,(i,loops[i]),loop.__name__)

     #target=(对象 ，一个参数 ，名字)
     print (target)
     print (target.name)
     print (target.func)
     #print (target.args)
     print (loop.__name__)
 target()
 print   (target())

    #t=threading.Thread(target=loop,args=(i,loops[i]))
   #t=threading.Thread(target=ThreadFunc(loop ,(i,loops[i]),loop.__name__))
     #t=threading.Thread(target=loop,args=(i, loops[i]))
     

关于__call__(self )的使用

 #!/usr/bin/poython
 class  ybl:
   def __init__(self ,name):
         self.name=name
   def __call__(self):
        print  (self.name)
 b=ybl('zx')
 print (b.name)
 b()