input: Write a function to calculate the total cost of a shopping cart. The function should consider the item prices, quantity, shipping cost, and any applicable taxes. The function should return the total cost as a float.
  
  
  def calculate_total_cost(items, shipping_cost, tax_rate):
      total_cost = 0
      for item in items:
          total_cost += item['price'] * item['quantity']
      total_cost += total_cost * tax_rate
      total_cost += shipping_cost
      return total_cost
  
  
  assert calculate_total_cost([
      {"name": "widget", "price": 10, "quantity": 5},
      {"name": "thingy", "price": 7, "quantity": 3},
      {"name": "doodad", "price": 5, "quantity": 2},
  ], 7.50, 0.095) == 104.775
  assert calculate_total_cost([
      {"name": "item1", "price": 5, "quantity": 2},
      {"name": "item2", "price": 3, "quantity": 4},
  ], 5.00, 0.08) == 33.18
  assert calculate_total_cost([], 0.00, 0.00) == 0.00
output: def calculate_total_cost(items, shipping_cost, tax_rate):
      total_cost = 0
      for item in items:
          total_cost += item['price'] * item['quantity']
      total_cost += total_cost * tax_rate
      total_cost += shipping_cost
      return total_cost