python 中的Array,Value及内存共享

 1 from multiprocessing import Process, Value, Array
 2 
 3 def f(n, a):
 4     n.value = 3.1415927
 5     for i in range(len(a)):
 6         a[i] = -a[i]
 7 
 8 if __name__ == ‘__main__‘:
 9     num = Value(‘d‘, 0.0)
10     arr = Array(‘i‘, range(10))
11 
12     p = Process(target=f, args=(num, arr))
13     p.start()
14     p.join()
15 
16     print num.value
17     print arr[:]