Method Overridden.py

 # Method Overridden

# Method overriding in Python refers to the ability of a 
# subclass to provide a specific implementation of a method 
# that is already defined in its superclass. When a method is 
# overridden in a subclass, the subclass provides a new 
# implementation of that method that replaces the 
# implementation inherited from the superclass.

class parent:         ## parent = parent(object) is same by default there called a object
    def write(self):
        print("Called From Parent.")

class child(parent):
    def write(self):
        print("Called From Child.")

c1 = child()
c1.write()
# if we call parent class method like
# parent.write(c1)


# Multiple Inheritance

class parent1:       ## parent1 = parent1(object) is same by default there called a object
    def write(self):
        print("It Parent1 Function")

class parent2:      ## parent2 = parent2(object) is same by default there called a object
    def write(self):
        print("It Parent2 Function")

class child1(parent1, parent2):
    def write(self):
        print("It Child Function")

obj = child1()
obj.write()
# if we call parent1 and parent2 class method like
# parent1.write(obj)
# parent2.write(obj)

# Multilevel Inheritance

class father :
     def write(self):
         print("Called From Father")

class son(father):
    def write(self):
        print("Called From Son")

class grandson(son):
    def write(self):
        print("Called From Grand-Child")

cls = grandson()
cls.write()
print("\nWe Can Call Son Function By Son Class :: ")
son.write(cls)
print("We Can Call Father Function By Father Class :: ")
father.write(cls)

###############################################

class parent1:
    def printf(self):
        print("\nFrom Parent1")

class parent2:
    def printf(self):
        print("From Parent2")

class child1(parent1, parent2):
    pass

class child2(parent2, parent1):
    pass

obj1 = child1()
obj1.printf()

obj2 = child2()
obj2.printf()


###############################################

class father1(object):
    def write(self):
        print("Called From Father 1")

class father2(object):
    def write(self):
        print("Called From Father 2")

class father3(object):
    def write(self):
        print("Called From Fahter 3")

class child(father1, father2, father3):
    def write(self):
        father1.write(self)
        father2.write(self)
        father3.write(self)

obj1 = child()
obj1.write()


Example-1:

class Account:
    def __init__(self, balance):
        self.balance = balance
        
    def calculateInterest(self):
        return self.balance * 0.01
        

class SavingsAccount(Account):
    def calculateInterest(self):
        return self.balance * 0.02
        
        
class CheckingAccount(Account):
    def calculateInterest(self):
        return self.balance * 0.005
        
        
class InvestmentAccount(Account):
    def calculateInterest(self):
        return self.balance * 0.05
        
        
savings_account = SavingsAccount(5000)
checking_account = CheckingAccount(5000)
investment_account = InvestmentAccount(5000)

print("Interest For Savings Account : ", savings_account.calculateInterest())
print("Interest For Checking Account : ", checking_account.calculateInterest())
print("Interest For Investment Account : ", investment_account.calculateInterest())