code changes on polymorphism

Author: sanjaypradeep

OOP/Polymorphism/MethodOverloading.py

@@ -13,7 +13,7 @@ def add(self, firstNum, secondNum):
         @desc: Takes two input paramter, adding them and returning
         @return: sum(firstNum, secondNum)
         '''
-        return self.firstNum + self.secondNum
+        return firstNum + secondNum
 
 
     # this method does the same as above, but the difference is, it takes 3 parameter here.
@@ -24,7 +24,15 @@ def add(self, firstNum, secondNum, thirdNum):
         @desc: takes three input parameter, adding them and returning
         @return : sum(firstNum, secondNum, threeNum)
         '''
-        return self.firstNum + self.secondNum + self.thirdNum
+        return firstNum + secondNum + thirdNum
+
+objRam = SampleClass()
+# firstFunctionCall = objRam.add(10,20)
+secondFunctionCall = objRam.add(10,20,30)
+
+objRam.special_add(1,2)
+
+
 
 #Method overloading is not possible
 # This is compile time polymorphism. 

OOP/Polymorphism/MethodOverloading_NotEfficient.py

@@ -4,6 +4,7 @@
 '''
 
 # Function to take multiple arguments 
+# *args is a list [1,2,3...]
 def add(datatype, *args): 
 
     # if datatype is int 
@@ -28,7 +29,24 @@ def add(datatype, *args):
 
 
 # Integer 
-add('int', 5, 6) 
+add('int', 5, 6,101,203,4354,54,65,76,4,6567,87,554,65,734,34,45,56,767,778) 
 
 # String 
-add('str', 'Hi ', 'Geeks') 
+add('str', 'Hi ', 'Geeks', "ram", "all", 'the', 'best') 
+
+
+class sampleclass():
+
+    def __init__(self, *args):
+        self.x = args
+    
+
+    def showMe(self):
+        print(self.x)
+
+
+ramObj = sampleclass(10,20,30,'Sanjay')
+ramObj.showMe()
+
+
+

OOP/Polymorphism/MethodOverriding.py

@@ -1,5 +1,5 @@
 
-class Father(object):
+class Father():
 
     def __init__(self, a, b):
         self.a = a
@@ -18,7 +18,7 @@ class Mother(Father):
 
     def __init__(self,):
         print ("b constructor")
-
+    
     def role(self):
         print("Mother of Two childrens")
 
@@ -28,6 +28,13 @@ def occupation(self):
     def whatCooking(self):
         print("Mother is preparing Pasta!")
 
+
+class Son(Father, Mother):
+    pass
+
+class Son(Mother):
+    pass
+
 # creating an object of mother.
 instanceOfMother = Mother()
 
@@ -50,8 +57,4 @@ def whatCooking(self):
 
 fatherInstance.occupation()
 
-fatherInstance.whatCooking()
-
-
-# how about this?
-print(bb.a)
+fatherInstance.whatCooking() ## this will throw error