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()