namedtuple让代码更易维护
from collections import namedtuple
# 一般写法
lst = [(1.5, 2, 3.0), (-0.3, -1.0, 2.1),...(1.3, 2.8, -2.5)]
print(lst[0][1] - lst[1][1])
使用命名的元祖namedtuple:
Point = namedtuple('Point', ['x',...如在属性x和y间增加一个维度k时:
Point = namedtuple('Point', ['x', 'k', 'y', 'z'])
lst = [Point(1.5, 2, 0.0, 3.0),