python读取文本中的坐标方法

import stringx , y , z = [] , [] ,[]with open("test.txt") as A: for eachline in A:  tmp = eachline.split()  x.append(string.atof(tmp[0]))  y.append(string.atof(tmp[1]))  z.append(string.atof(tmp[2]))print x,y,z

0.1 0.2 1 0.3 0.4 2 0.4 0.5 3 0.6 0.7 4