# The BankAccount class simulates a bank account.

class BankAccount:
    
    # The __init__ method accepts an argument for
    # the account's balance. It is assigned to
    # the __balance attribute.
    
    def __init__(self, bal):
        self.__balance = bal

    # The deposit method makes a deposit into the
    # account.

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

    # The withdraw method withdraws an amount
    # from the account.

    def withdraw(self, amount):
        if self.__balance >= amount:
            self.__balance -= amount
        else:
            print('Error: Insufficient funds')

    # The get_balance method returns the
    # account balance.

    def get_balance(self):
        return self.__balance

    # The __str__ method returns a string
    # indicating the object's state.

    def __str__(self):
        return 'The balance is $' + format(self.__balance, ',.2f')