python计算两个坐标点的距离

# -*- coding:utf-8 -*-
"""
@author: 14931
@file: trianglearea.py
@time: 2023/02/14
@desc:
"""
import math #导入模块
class Point: #创建类，得到一个点
    def __init__(self,a=0,b=0):
        self.a = a
        self.b = b
    def getA(self):
        return self.a
    def getB(self):
        return self.b

class Line: #计算两个点的距离
    def __init__(self,p1,p2):
        self.a = p1.getA() - p2.getA()
        self.b = p1.getB() - p2.getB()
        self.len = math.sqrt(self.a*self.a + self.b*self.b)
    def getlen(self):
        return self.len
p1 = Point(1,2)
p2 = Point(4,6)
lineLen = Line(p1,p2)
print(lineLen.getlen())