account.py

#                             🏦 Banking System Using Inheritance

# -- Parent Class Creation --
class Account:
    def __init__(self, account_holder, account_number, balance):
        self.account_holder = account_holder
        self.account_number = account_number
        self.balance = balance
        self.transactions = []
        statement = f"Account Created | Initial Balance ₹{self.balance}"
        self.transactions.append(statement)

    def deposit(self, amount):
        if amount > 0:
            self.balance += amount
            print(f"₹{amount} deposited successfully.")
            print("Current Balance:", self.balance)
            statement = f"Deposited ₹{amount} | Balance ₹{self.balance}"
            self.transactions.append(statement)
        else:
            print("Invalid amount, Amount must be greater than 0")

    def show_balance(self):
        print("Current Balance:", self.balance)
        statement = f"Balance Checked | Balance ₹{self.balance}"
        self.transactions.append(statement)

    def show_account_details(self):
        print("====== Account Details ======")
        print(f"Account Holder  : {self.account_holder}")
        print(f"Account Number  : {self.account_number}")
        print(f"Current Balance : ₹{self.balance}")

    def transaction_history(self):
        print("====== Transaction History ======")
        print("           (Last five)          \n")
        print("Total Transactions :", len(self.transactions) ,"\n")
        if not self.transactions:
            print("No transaction history available.")
        else:
            if len(self.transactions) <= 5:
                serial_no = 0
                for transaction in self.transactions:
                    serial_no += 1
                    print(f"{serial_no}. {transaction}")
            else:
                start = len(self.transactions) - 5
                serial_no = 0
                for i in range(start, start +5):
                    serial_no += 1
                    print(f"{serial_no}. {self.transactions[i]}")

# -- Child Class Creation --
class SavingsAccount(Account):
    def __init__(self, account_holder, account_number, balance, interest_rate):
        super().__init__(account_holder, account_number, balance)
        self.interest_rate = interest_rate

    def add_interest(self):
        interest_amount = self.balance *  (self.interest_rate / 100)
        print(f"Interest: {self.interest_rate}%")
        print(f"Interest Amount: {interest_amount}")
        self.balance += interest_amount
        print("Current Balance:", self.balance)
        statement = f"Interest Added: ₹{interest_amount}/- | Balance ₹{self.balance}"
        self.transactions.append(statement)

    def withdraw(self, amount):
        if amount > 0:
            if amount <= self.balance:
                self.balance -= amount
                print(f"₹{amount} debited successfully.")
                print("Current Balance:", self.balance)
                statement = f"Withdrawn: ₹{amount}/- | Balance ₹{self.balance}"
                self.transactions.append(statement)
            else:
                print("Insufficient Balance")
        else:
            print("Invalid amount, Amount must be greater than 0")

    def show_account_details(self):
        super().show_account_details()
        print(f"Account Type    : Savings Account")
        print(f"Interest Rate   : {self.interest_rate}%")

# -- Child Class Creation --
class CurrentAccount(Account):
    def __init__(self, account_holder, account_number, balance, overdraft_limit):
        super().__init__(account_holder, account_number, balance)
        self.overdraft_limit = overdraft_limit

    def withdraw(self, amount):
        if amount > 0:
            if amount <= self.balance + self.overdraft_limit:
                self.balance -= amount
                print(f"₹{amount} debited successfully.")
                print("Current Balance:", self.balance)
                statement = f"Withdrawn: ₹{amount}/- | Balance ₹{self.balance}"
                self.transactions.append(statement)
            else:
                print("Insufficient Balance including Overdraft limit")
        else:
            print("Invalid amount, Amount must be greater than 0")

    def show_account_details(self):
        super().show_account_details()
        print(f"Account Type    : Current Account")
        print(f"Overdraft Limit : ₹{self.overdraft_limit}")