customer_class_example.py

class Customer(object):
    '''A customer of Zuanazzi Bank with a checking account. Customers hav the following properties:

    Attributes:
        name: A string representing the customer's name.
        balance: A float tracking the current balance of the customer's account.

    '''

    def __init__(self, name, balance = 0.0):
        '''Return a Customer object whose name is *name* and starting balance is *balance*.
        '''
        self.name = name
        self.balance = balance

    
    def withdraw(self, amount):
        '''Return the balance remaining after withdrawing *amount* dollars.
        '''
        if amount > self.balance:
            raise RuntimeError('Amont greater than available balance.')
        self.balance -= amount
        return self.balance

    def deposit(self, amount):
        '''Return the balance remaining after depositing *amount* dollars.
        '''
        self.balance += amount
        return self.balance