The __str__ Method

__str__ defines how an object is displayed when printed:

class Product:
    def __init__(self, name, price):
        self.name = name
        self.price = price
    
    def __str__(self):
        return f"{self.name}: $" + f"{self.price}"
p = Product("Apple", 0.50)
print(p)  # Apple: $0.50

Your Task

Add a __str__ method to Expense that returns: "[description]: $[amount]"

Example: "Lunch: $15.00"