Python程序段如下：
a=[0]*5 for i in range(5): num=random.randint(1,10) if num%2==0: a[i]=num
[0, 0, 0, 0, 0]
[2, 4, 5, 6, 11]
[0, 2, 2, 0, 10]
[8, 4, 6, 4, 0]