Write a python program to bank management system

This Python program simulates a simple bank management system using a Bank class. It allows users to create accounts, deposit money, withdraw money, check balances, and exit the program. Here's an explanation of the program:

class Bank: This is the main class representing the bank. It has the following methods:

__init__(self): The constructor initializes an empty accounts dictionary to store account information.
create_account(self, account_number, account_holder, initial_balance): This method creates a new account and stores it in the accounts dictionary. It checks for account number duplication and negative initial balances.
deposit(self, account_number, amount): This method allows deposits into an existing account, updating the account balance.
withdraw(self, account_number, amount): This method allows withdrawals from an existing account, updating the account balance. It also checks for sufficient balance and non-negative withdrawal amounts.
check_balance(self, account_number): This method checks the balance of an existing account and returns the account holder's name and balance as a formatted string.

The program creates a Bank object named bank.
The program presents a menu to the user with the following options: create account, deposit money, withdraw money, check balance, and exit.
In a loop, the program reads the user's choice and performs the selected operation:

For "Create Account," it collects account details and calls the create_account method.
For "Deposit Money," it collects the account number and deposit amount and calls the deposit method.
For "Withdraw Money," it collects the account number and withdrawal amount and calls the withdraw method.
For "Check Balance," it collects the account number and calls the check_balance method.
For "Exit," it exits the program.

The program ensures input validation and provides appropriate feedback to the user.

When you run this program, it allows you to simulate a basic bank management system by creating accounts, depositing money, withdrawing money, and checking balances. It uses the Bank class to manage accounts and account operations.

Source Code

class Bank:
    def __init__(self):
        self.accounts = {}
 
    def create_account(self, account_number, account_holder, initial_balance):
        if account_number in self.accounts:
            return "Account already exists"
        if initial_balance < 0:
            return "Initial balance must be non-negative"
 
        self.accounts[account_number] = {
            'account_holder': account_holder,
            'balance': initial_balance
        }
        return "Account created successfully"
 
    def deposit(self, account_number, amount):
        if account_number not in self.accounts:
            return "Account does not exist"
        if amount <= 0:
            return "Amount to deposit must be positive"
 
        self.accounts[account_number]['balance'] += amount
        return "Deposited " + str(amount) + " successfully. New balance : " + str(self.accounts[account_number]['balance'])
 
    def withdraw(self, account_number, amount):
        if account_number not in self.accounts:
            return "Account does not exist"
        if amount <= 0:
            return "Amount to withdraw must be positive"
 
        if self.accounts[account_number]['balance'] < amount:
            return "Insufficient balance."
 
        self.accounts[account_number]['balance'] -= amount
        return "Withdrew " + str(amount) + " successfully. New balance : " + str(self.accounts[account_number]['balance'])
 
    def check_balance(self, account_number):
        if account_number not in self.accounts:
            return "Account does not exist"
 
        return "Account Holder : " + self.accounts[account_number]['account_holder'] + "\nBalance : " + str(self.accounts[account_number]['balance'])
 
bank = Bank()	# Create a Bank object
 
print("\n****** Bank Management System ******")
print("\n1. Create Account")
print("2. Deposit Money")
print("3. Withdraw Money")
print("4. Check Balance")
print("5. Exit")
 
while True:
 
    choice = input("\nEnter your Choice (1 to 5): ")
 
    if choice == '1':
        account_number = input("Enter Account Number : ")
        account_holder = input("Enter Account Holder's Name : ")
        initial_balance = float(input("Enter Initial Balance : "))
        result = bank.create_account(account_number, account_holder, initial_balance)
        print(result)
 
    elif choice == '2':
        account_number = input("Enter Account Number : ")
        amount = float(input("Enter Amount to Deposit : "))
        result = bank.deposit(account_number, amount)
        print(result)
 
    elif choice == '3':
        account_number = input("Enter Account Number : ")
        amount = float(input("Enter Amount to Withdraw : "))
        result = bank.withdraw(account_number, amount)
        print(result)
 
    elif choice == '4':
        account_number = input("Enter Account Number : ")
        result = bank.check_balance(account_number)
        print(result)
 
    elif choice == '5':
        print("Exiting the program.")
        break
 
    else:
        print("Invalid Choice. Please Try Again !!!")

Output

****** Bank Management System ******

1. Create Account
2. Deposit Money
3. Withdraw Money
4. Check Balance
5. Exit

Enter your Choice (1 to 5): 1
Enter Account Number : 123456789
Enter Account Holder's Name : Riya
Enter Initial Balance : 10000
Account created successfully

Enter your Choice (1 to 5): 2
Enter Account Number : 123456789
Enter Amount to Deposit : 25000
Deposited 25000.0 successfully. New balance : 35000.0

Enter your Choice (1 to 5): 3
Enter Account Number : 123456789
Enter Amount to Withdraw : 5000
Withdrew 5000.0 successfully. New balance : 30000.0

Enter your Choice (1 to 5): 4
Enter Account Number : 123456789
Account Holder : Riya
Balance : 30000.0

Enter your Choice (1 to 5): 5
Exiting the program.

Write a python program to bank management system

Source Code

Output

Example Programs

Class and Object Programs in Python