Thread对象的属性
            
              import threading
from time import sleep,ctime
def pri(py,n):
    name=p1.name                      # 线程名
    id=p1.ident                       # 线程标识符
    for i in range(n):
        print('name=%s now=%s id=%s'%(name,ctime(),id))
        sleep(1)
p1=threading.Thread(target=pri,args=('python',3),name='chian')
#p1.setName('chinese')                # 设置线程名
p1.start()                            # 启动线程
            
          
          
            args参数类型为元组,所以只有一个参数时为(‘python’,)
            
            
              
            
            
             join()的使用比较
          
            
              import threading
from time import sleep,ctime
def pri():
    for i in range(3):
        print('pri1=%s'%ctime())
        sleep(1)
p1=threading.Thread(target=pri,daemon=True)
p1.start() 
p1.join()          # 使主线程挂起
print("___end")
print(threading.activeCount())
            
          
          
        

