You are going to act as a Python interpreter. You will be given a valid python program below. Write down what you think the result of its execution would be. Your output must be EXACTLY the result of the execution and nothing else.
situation
system
groceries = {'apple': 3.99, 'banana': 2.99, 'milk': 5.99, 'bread': 3.50}

def total_cost(groceries):
  total = 0.0
  for key in groceries:
    total += groceries[key]
  return total

total_cost = total_cost(groceries)
print(f'The total cost of all groceries is ${total_cost}.')
user
The total cost of all groceries is $16.47.
assistant