python - 在列表中的两个元素之间创建链接

Question

如果问题很简单，请原谅我，但我被困在了这一点上。我有一个看起来像这样的代码:

list=[1,2,3,4]

for Source, Destination in zip(list, list[1:]):
     print ("Source: "),Source
     print ("Destination: "),Destination

即使它为我提供了每个压缩数组的源和目标输出。那么，我怎样才能得到这样的输出:

Source = 1
Intermediate destination = 2

Intermediate Source = 2
Intermediate destination = 3

Intermediate Source = 3
Final Destination = 4

?

该代码也应该适用于不同大小的列表。不幸的是，请不要提供与 NumPy 相关的解决方案。谢谢。

Answer 1

你可以做到，不是吗？

print "Source =", list[0]
print "Intermediate Destination =", list[1], "\n"
for Source, Destination in zip(list[1:-1], list[2:-1]):
    print "Intermediate Source =", Source
    print "Intermediate Destination =", Destination, "\n"       
print "Intermediate Source =", list[-2]
print "Final Destination =", list[-1]

Source = 1
Intermediate Destination = 2 

Intermediate Source = 2
Intermediate Destination = 3 

Intermediate Source = 3
Final Destination = 4