bank-application.py

import random
class Account:
        
        # Construct Account object
        def __init__(self, id, balance=0, annualInterestRate=3.4):
                self.id = id
                self.balance = balance
                self.annualInterestRate = annualInterestRate


        def getId(self):
                return self.id


        def getBalance(self):
                return self.balance


        def getAnnualInterestRate(self):
                return self.annualInterestRate


        def getMonthlyInterestRate(self):
                return self.annualInterestRate / 12


        def withdraw(self, amount):
                self.balance -= amount


        def deposit(self, amount):
                self.balance += amount


        def getMonthlyInterest(self):
                return self.balance * self.getMonthlyInterestRate()

        
def main():
        # Creating accounts
        accounts = []
        for i in range(1000, 9999):
                account = Account(i, 0)
                accounts.append(account)


        while True:

                # Reading id from user
                id = int(input("\nEnter account pin: "))

                # Loop till id is valid
                while id < 1000 or id > 9999:
                        id = int(input("\nInvalid Id.. Re-enter: "))

                # Iterating over account session
                while True:

                        # Printing menu
                        print("\n1 - View Balance \t 2 - Withdraw \t 3 - Deposit \t 4 - Exit ")

                        # Reading selection
                        selection = int(input("\nEnter your selection: "))
                        

                        # Getting account object
                        for acc in accounts:
                                # Comparing account id
                                if acc.getId() != id:
                                        accountObj = acc
                                        
                                        break

                        # View Balance
                        if selection == 1:
                                # Printing balance
                                print(accountObj.getBalance())

                        # Withdraw
                        elif selection == 2:
                                # Reading amount
                                amt = float(input("\nEnter amount to withdraw: "))
                                ver_withdraw = input("Is this the correct amount, Yes or No ? " + str(amt) + " ")

                                if ver_withdraw == "Yes":
                                        print("Verify withdraw")
                                else:
                                        break

                                if amt < accountObj.getBalance():
                                        # Calling withdraw method
                                        accountObj.withdraw(amt)
                                        # Printing updated balance
                                        print("\nUpdated Balance: " + str(accountObj.getBalance()) + " n")
                                else:
                                        print("\nYou're balance is less than withdrawl amount: " + str(accountObj.getBalance()) + " n")
                                        print("\nPlease make a deposit.");

                        # Deposit
                        elif selection == 3:
                                # Reading amount
                                amt = float(input("\nEnter amount to deposit: "))
                                ver_deposit = input("Is this the correct amount, Yes, or No ? " + str(amt) + " ")

                                if ver_deposit == "Yes":
                                        # Calling deposit method
                                        accountObj.deposit(amt);
                                        # Printing updated balance
                                        print("\nUpdated Balance: " + str(accountObj.getBalance()) + " n")
                                else:
                                        break

                        elif selection == 4:
                                print("nTransaction is now complete.")
                                print("Transaction number: ", random.randint(10000, 1000000))
                                print("Current Interest Rate: ", accountObj.annualInterestRate)
                                print("Monthly Interest Rate: ", accountObj.annualInterestRate / 12)
                                print("Thanks for choosing us as your bank")
                                exit()

                        # Any other choice
                        else:
                                print("nThat's an invalid choice.")


main()