Python Class

Classes in Python...

classes_in_python

The following is a defined class in Python. Python uses the naming convention _name_ for internal functions. Python allows operator overloading, e.g. you can define what the operator + will do for a specific class.

_init_ Constructor of the class
_str_ The method which is called if print is applied to this object
_add_ + Operator
_mul_ * Operator

The empty object (null) is called _None_ in Python.

class Point:
    def __init__(self, x=0, y=0):
        self.x = x
        self.y = y
    def __str__(self):
        return "x-value" + str(self.x) + " y-value" + str(self.y)
    def __add__(self,other):
        p = Point()
        p.x = self.x+other.x
        p.y = self.y+other.y
        return p

p1 = Point(3,4)
p2 = Point(2,3)
print (p1)
print (p1.y)
print (p1+p2)
 
x-value3 y-value4 4 x-value5 y-value7


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