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4class_bank.py
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4class_bank.py
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# 4. Write a Python program to create a class representing a bank.
# Include methods for managing customer accounts and transactions.
class Bank:
def __init__(self):
self.accounts = {}
def create_account(self, account_number, initial_balance):
if account_number not in self.accounts:
self.accounts[account_number] = initial_balance
print(f"Account created successfully. Account number: {account_number}")
else:
print("Account already exists. Please choose a different account number.")
def check_balance(self, account_number):
balance = self.accounts.get(account_number, None)
if balance is not None:
print(f"Balance for account {account_number}: ${balance:.2f}")
else:
print("Account not found.")
def deposit(self, account_number, amount):
if account_number in self.accounts:
self.accounts[account_number] += amount
print(f"Deposit successful. New balance: ${self.accounts[account_number]:.2f}")
else:
print("Account not found.")
def withdraw(self, account_number, amount):
if account_number in self.accounts:
if amount <= self.accounts[account_number]:
self.accounts[account_number] -= amount
print(f"Withdrawal successful. New balance: ${self.accounts[account_number]:.2f}")
else:
print("Insufficient funds.")
else:
print("Account not found.")
# Create a bank
bank = Bank()
while True:
print("\nBank Operations:")
print("1. Create Account")
print("2. Check Balance")
print("3. Deposit")
print("4. Withdraw")
print("5. Quit")
choice = input("Enter your choice (1/2/3/4/5): ")
if choice == '1':
account_number = input("Enter the account number: ")
initial_balance = float(input("Enter the initial balance: "))
bank.create_account(account_number, initial_balance)
elif choice == '2':
account_number = input("Enter the account number: ")
bank.check_balance(account_number)
elif choice == '3':
account_number = input("Enter the account number: ")
amount = float(input("Enter the deposit amount: "))
bank.deposit(account_number, amount)
elif choice == '4':
account_number = input("Enter the account number: ")
amount = float(input("Enter the withdrawal amount: "))
bank.withdraw(account_number, amount)
elif choice == '5':
print("Exiting the program.")
break
else:
print("Invalid choice. Please enter 1, 2, 3, 4, or 5.")