Adding items from a list to a dictionary in Python [closed]

Answer 1

The problem was a simple indentation typo. Now if we were trying to write some more efficient/pythonic code, we could just use collections.Counter which is a specialized dictionary type which counts items. Your code can be shortened and optimized:

from collections import Counter

inv = Counter({'gold coin': 42, 'rope': 1})

inv.update(['gold coin', 'dagger', 'gold coin', 'gold coin', 'ruby'])

print(inv)

result:

Counter({'gold coin': 45, 'rope': 1, 'dagger': 1, 'ruby': 1})

Answer 2

def addToInventory(inventory, addedItems):
    for i in addedItems:
        if i in inventory:
            inventory[i] = inventory[i] + 1
        else:
            inventory[i] = 1
    return inventory

(return after for, not after if.)