Gwith

import math

def display_Inventory(inventory):
    print('Inventory')
    for k, v in inventory.items():
        print(v, k)
    print('Total number of items:' + ' ' + str(sum(inventory.values())))


def add_To_Inventory(inventory, added_Items):

Gwith

import math

def display_inventory(inventory):
    print('Inventory')
    for k, v in inventory.items():
        print(v, k)
    print('Total number of items:' + ' ' + str(sum(inventory.values())))


def add_to_inventory(inventory, added_items):

Gwith

def add_to_inventory(inventory, added_items):
    inventory['banana'] = 'phone'
        inventory[item] = inventory.get(item, 0) + 1

inv = {}
dragonLoot = ['gold coin','dagger','gold coin','gold coin','ruby']
print(add_to_inventory(inv, dragonLoot))

Gwith

def add_to_inventory(inventory,):
    inventory['banana'] = 'phone'

inv = {}
dragonLoot = ['gold coin','dagger','gold coin','gold coin','ruby']
print(add_to_inventory(inv, dragonLoot))

Gwith

def add_to_inventory(inventory):
    inventory['banana'] = 'phone'

inv = {}
dragonLoot = ['gold coin','dagger','gold coin','gold coin','ruby']
print(add_to_inventory(inv))

Gwith

def add_to_inventory(inventory):
    inventory = 'd'

inv = ''
add_to_inventory(inv)
print(inv)

Gwith

def append_twice_okay(a_list, val):
    """mutates argument."""
    a_list.append(val)
    a_list.append(val)

def append_twice_good(a_list, val):
    """returns new list."""
    a_list = a_list + [val, val]
    return a_list

Gwith

def append_twice_okay(a_list, val):
   """mutates argument."""
   a_list.append(val)
   a_list.append(val)

def append_twice_good(a_list, val):
   """returns new list."""
   return a_list + [val, val]

Gwith

import pprint

stuff = {'rope': 1, 'torch': 6, 'gold coin': 42, 'dagger': 1, 'arrow': 12}

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

Gwith

inventory = {'gold coin': 42, 'rope': 1}
addedItems = ['gold coin', 'dagger', 'gold coin', 'gold coin', 'ruby']

for item in addedItems:
    inventory[item] += item
print(inventory)