How can I call a function within a class?

PythonClassFunctionCall

Python Problem Overview

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

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)
        ...

Python Solutions

Solution 1 - Python

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

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

Solution 2 - Python

That doesn't work because distToPoint is inside your class, so you need to prefix it with the classname if you want to refer to it, like this: classname.distToPoint(self, p). You shouldn't do it like that, though. A better way to do it is to refer to the method directly through the class instance (which is the first argument of a class method), like so: self.distToPoint(p).

Categories
Recommended Python Solutions
Recommended Class Solutions
Recommended Function Solutions
Recommended Call Solutions

Previous Solution:

What does git push -u mean?

Git

Next Solution:

Node.js fs.readdir recursive directory search

node.jsReaddir

Attributions

All content for this solution is sourced from the original question on Stackoverflow.

The content on this page is licensed under the Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) license.

Content TypeOriginal AuthorOriginal Content on Stackoverflow
QuestionStevenView Question on Stackoverflow
Solution 1 - PythonJeff MercadoView Answer on Stackoverflow
Solution 2 - PythonAleksi TorhamoView Answer on Stackoverflow