使用循环麻烦遍历多个列表

Question

目标是计算n边多边形的周长。我正在尝试使用列表x和y，但我一直遇到“ for循环”中的错误。我可以做些什么？

from math import sqrt
x = []
y = []
distance = []
perimeter = sum(distance)

while True:
   x.append(int(input('Enter x value of a point: ')))
   y.append(int(input('Enter y value of the point: ')))
   if x[-1] == 0 and y[-1] == 0:
      break

for i,j in (x, y):
   distance = sqrt((abs((x[i]) - (x[i+1])))**2 + (abs((y[i]) - (y[i+1])))**2)

print(perimeter)```