如何在类中调用函数? [英] How to call a function within class?

问题描述

我有这段代码可以计算两个坐标之间的距离.这两个函数都在同一个类中.

I have this code which calculates the distance between two coordinates. The two functions are both within the same class.

但是如何在函数isNear中调用函数distToPoint?

However how do I call the function distToPoint in the function isNear?

class Coordinates:
    def distToPoint(self, p):
        """
        Use pythagoras to find distance
        (a^2 = b^2 + c^2)
        """
        ...

    def isNear(self, p):
        distToPoint(self, p)
        ...

推荐答案

由于这些是成员函数，因此请在实例self上将其作为成员函数调用.

Since these are member functions, call it as a member function on the instance, self.

def isNear(self, p):
    self.distToPoint(p)
    ...

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