POLYMORPHISM:
=============

Method Overloading:
===================

m1():
	implement-1

m1():
	implment-2
m1():
	implment-3

m1():
	without arguments

m1(self,a):
	with one parameter
m1(self,a,b):
	with two parameters

len():
	len("Python") ==> 6 ==> total number of characters
	len(["Python","Abcde","Defghi""JKLMN"]) ==> 4 ==> count of number of string elements
	len({"abc":"pqr","def":"xyz","ghi":"lmn"}) ==> 3 ==> count of number of pair of strings


ex:
digital calculator:

sum():
	NO DATA
	sum = 0
sum(10) 
	SUM = 10
SUM(10,20)
	SUM = 30

BNKING APPLICATION
ROI
	SIMPLE
	COMPUND

class Calculator:
    def addition(self,a = None,b = None,c = None,d = None,e = None):
        if a != None and b != None and c != None and d != None and e != None:
            print("The sum of 5 numbers = ",a+b+c+d+e)
        elif a!= None and b != None and c != None and d != None:
            print("The Sum of 4 numbers = ",a+b+c+d)
        elif a != None and b != None and c != None:
            print("The Sum 3 numbers = ",a+b+c)
        elif a != None and b != None:
            print("The Sum of 2 numbers = ",int(a)+int(b))
        elif a != None:
            print("The Sum is = ",a)
        else:
            print("The Sum = ",0)

cls = Calculator()

cls.addition()  # 0 parameters
cls.addition(100)   # 1 parameter
cls.addition(121,122)
cls.addition(111,222,333)
cls.addition(12,24,36,48)

========================================

# method overloading

class greetings:
    # def wish(self):
    #     print("Good Morning")
    # def wish(self):
    #     print("Good Afternoon")
    # def wish(self):
    #     print("Good Evening")

    def wish(self,time = 0):
        if time > 0 and time < 12:
            print("Good Morning")
        elif time >= 12 and time < 16:
            print("Good Afternoon")
        elif time >= 16 and time < 20:
            print("Good Evening.")
        elif time >= 20 and time < 24:
            print("Good Night.")
        else:
            print("time Zone is searching..")
# when the same method with three definitions,
# the last definition is considered as the updated definition to execute.

gt = greetings()

gt.wish()   # 0 parameters
gt.wish(6)
gt.wish(13)
gt.wish(22)

=====================================

Constructor Overloading:
=======================
No constructor overloading is supported by the python.

# constructor overloading


class constructorOverloading:
    def __init__(self):
        print("Hello")

    def __init__(self,name):
        print("Hello",name)

# obj = constructorOverloading()
obj = constructorOverloading("Kumar")