Advanced+110 XP

Bank Account

Build a BankAccount class that protects its balance. Withdrawing more than you have should raise a custom exception you catch with try/except. Combines OOP with error handling — a very real-world pattern.

Requirements

1
Create an InsufficientFunds exception (subclass of Exception)
2
deposit(amount) increases the balance
3
withdraw(amount) raises InsufficientFunds if amount > balance
4
Catch the exception with try/except and keep going

Build it here — edit the starter code and hit Run:

bank-account.py · editable

class InsufficientFunds(Exception):
    pass

class BankAccount:
    def __init__(self, balance=0):
        self.balance = balance

    def deposit(self, amount):
        # TODO
        pass

    def withdraw(self, amount):
        # TODO: raise InsufficientFunds if amount > balance, else subtract it
        pass

acct = BankAccount(100)
acct.deposit(50)
try:
    acct.withdraw(500)
except InsufficientFunds:
    print("Not enough money!")
print("Balance:", acct.balance)