Python inventory system with dicts.

[2skywalkers]

Ok, i got that part figured out, thanks, but im confused.. again. Apple already has 10, but when I go to add it, if I want to add 2, so it is 12, it sets it equal to 2. I also can't figure out the remove part at all.

intro = input("What would you like to do?: ")
 
if intro == "add" or intro == "Add":
    where = input("Where would you like to add?: ")
    item = input("What would you like to add?: ")
    amount = int(input("How much would you like to add?: "))
     
    inv[where][item] += amount
    print(item + ": " + str(amount))
 
elif intro == "remove" or intro == "Remove":
    where = input("Where would you like to remove?: ")
    item = input("What would you like to remove?: ")
    amount = int(input("How much would you like to remove?: "))
    
    inv[where][item] = item - int(amount)
    print(item + ": " + str(amount))