input: Write a python function to calculate the total price of items in a basket using the Basket class.
  assert calculate_total_price([]) == 0
  assert calculate_total_price([Item("apple", 1.0), Item("banana", 1.5)]) == 2.5
  assert calculate_total_price([Item("milk", 3.0), Item("bread", 2.0), Item("cheese", 4.0)]) == 9.0
output: class Item:
      def __init__(self, name, price):
          self.name = name
          self.price = price
  
  def calculate_total_price(items):
      return sum(item.price for item in items)