我怎么能减少这段代码的长度？ [英] How could I reduce the length of this code?

问题描述

我需要尽可能地减少Python3中此代码的长度（即使它的可读性较差）：

I need to reduce the length of this code in Python3 as much as possible (even if it will be less readable):

a,b,x,y=[int(i) for i in input().split()]
while 1: 
     r=''
     if y<b:r='S';y+=1
     if y>b:r='N';y-=1 
     if x<a:r+='E';x+=1
     if x>a:r+='W';x-=1
     print(r)

这是一张地图：你在（x，y），你需要去北（东北）的南北的（a，b）S东北....每次转弯后我必须告诉我去哪里使用打印。



例如我可以将所有if放在一行吗？

It's a map: you are on (x,y) and you need to go to (a,b) S for South N for North NE for North East.... After each turn I must tell where to go using print.

For example could I put all the if on one line ?

推荐答案

可以省去变量 r ，因为没有必要。您还可以改进while循环，使其实际完成，如下所示：

The variable r can be dispensed with as it is not necessary. You could also improve the while loop so it actually completes, as follows:

while (a != x or b != y):
    if y>b:y-=1;print('North', y)
    if y<b:y+=1;print('South', y)
    if x<a:x+=1;print('East', x)
    if x>a:x-=1;print('West', x)

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