多线程——进行自定义运算

import threading
def a(aa):
   global aa1
   aa1-=aa
   print(aa1,aa,threading.current_thread().name)
   
aa1=100                                       #定义起始数值
def threadd():
   global aa1
   print(threading.current_thread().name)
   for i in range(3):
       
       bb=[]
       for ii in range(2):
           a1=int(input())                     #输入自已的数值
           print(a1,type(a1))
           t =threading.Thread(target=a,args=(a1,))
           t.start()
           bb.append(t)
       for t1 in bb:
           t1.join()
       #time.sleep()

threadd()