Inheritance

What is Inheritance?

• One class (child) inherits properties/methods from another class (parent)

• Child can reuse, extend or override the parent

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🏦 Example: Bank Account types

Copyclass BankAccount:
    def __init__(self, holder, balance):
        self.holder = holder
        self.balance = balance

    def show(self):
        print(f"{self.holder} has balance {self.balance}")

class SavingsAccount(BankAccount):
    def __init__(self, holder, balance, interest):
        super().__init__(holder, balance)
        self.interest = interest

    def show(self):
        print(f"{self.holder} (Savings) - Balance: {self.balance}, Interest: {self.interest}")

Copyacc = SavingsAccount("Maham", 5000, 0.05)
acc.show()
# Maham (Savings) - Balance: 5000, Interest: 0.05

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🧠 Key things:

• super() → used to call the parent constructor or methods

• Child class can override methods from parent class

• You can access parents’ methods using super().method_name()

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🤔 Real-life analogies:

• Parent class is like general blueprint
  Child class is like special version with more features
  jaise:

  • Vehicle → Car, Bike, Truck

  • Employee → Manager, Intern