Dictionary Inventory

def displayInventory(inventory):
  print("Inventory:")
  item_total = 0
  for k, v in inventory.items():
    print(str(v) + ' ' +  str(k))
    item_total += v
  print("Total number of items: " + str(item_total))

def addToInventory(inventory, addedItems):
    for i in range(len(addedItems)):
        inventory.setdefault(addedItems[i], 0)
        inventory[addedItems[i]] = inventory[addedItems[i]] + 1
    return inventory

inv = {'gold coin': 42, 'rope': 1}
dragonLoot = ['gold coin', 'dagger', 'gold coin', 'gold coin', 'ruby']
inv = addToInventory(inv, dragonLoot)
displayInventory(inv)