'Multiple classes in Python

I am learning OOPS in Python. I encountered this piece of code during my course.

class Point(object):
def __init__(self,x,y):
    self.x=x
    self.y=y


class Line(object):        
def __init__(self,p1,p2):
    self.p1=p1
    self.p2=p2

def slope(self):
    return (self.p2.y - self.p1.y)/         (self.p2.x-self.p1.x) 

Let's say for Point class I have two instances P1(11,6) and P2(12,3). For class Line, I have one object L1(7,2). What does it mean that self.p2.y? What value would be accessed here?

I have looked at many places but couldn't find this concept?

python-3.xclassobject


Solution 1:[1]

self refers to the object of that class. the variables after the . operator are attributes

you can use something other than self, but its good practice to use self.

so for P1, self refers to the P1 object.

theres also a version of self for classes (cls) but thats for class methods

Sources

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Source: Stack Overflow

Solution Source
Solution 1 itsrxmmy

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