new_contents: def tax(bill):
      """Adds 8% tax to a restaurant bill."""
      bill *= 1.08
      print "With tax: %f" % bill
      return bill
  
  def tip(bill):
      """Adds 15% tip to a restaurant bill."""
      bill *= 1.15
      print "With tip: %f" % bill
      return bill
      
  meal_cost = raw_input("Meal Cost")
  meal_with_tax = tax(meal_cost)
  meal_with_tip = tip(meal_with_tax)
  
subject: Create __init__.py