有人能告诉我这些数字消失了吗？(Can someone tell me where the numbers disappear? [closed])

有人能告诉我这些数字消失了吗？(Can someone tell me where the numbers disappear? [closed])

为什么以下代码打印11238而不是11235？

num_list = [1,1,2,3,5,8,13] for i in range(5): print(num_list[num_list[i]])

并且13不在索引5中为什么？ 5和13在哪里消失？

Why does following code print 11238 and not 11235?

num_list = [1,1,2,3,5,8,13] for i in range(5): print(num_list[num_list[i]])

And 13 is not in index 5 why? Where do 5 and 13 disappear?

最满意答案

你的循环说：

print (num_list[num_list[0]]) print (num_list[num_list[1]]) print (num_list[num_list[2]]) print (num_list[num_list[3]]) print (num_list[num_list[4]])

这意味着：

print (num_list[1]) # since num_list[0] holds 1 print (num_list[1]) # since num_list[1] holds 1 print (num_list[2]) # since num_list[2] holds 2 print (num_list[3]) # since num_list[3] holds 3 print (num_list[5]) # since num_list[4] holds 5

意思是：

print (1) # since num_list[1] holds 1 print (1) # since num_list[1] holds 1 print (2) # since num_list[2] holds 2 print (3) # since num_list[3] holds 3 print (8) # since num_list[5] holds 8

Your loop says:

print (num_list[num_list[0]]) print (num_list[num_list[1]]) print (num_list[num_list[2]]) print (num_list[num_list[3]]) print (num_list[num_list[4]])

That means:

print (num_list[1]) # since num_list[0] holds 1 print (num_list[1]) # since num_list[1] holds 1 print (num_list[2]) # since num_list[2] holds 2 print (num_list[3]) # since num_list[3] holds 3 print (num_list[5]) # since num_list[4] holds 5

which means:

print (1) # since num_list[1] holds 1 print (1) # since num_list[1] holds 1 print (2) # since num_list[2] holds 2 print (3) # since num_list[3] holds 3 print (8) # since num_list[5] holds 8