You are given a dictionary storing inventory counts of a store’s items.
For example:
{“tshirt”:29, “pants”:14, “shirt”:7, “shoes”:5}
You are also given a list of tuples, where each tuple contains an item name and an integer amount, representing a transaction on that item. For example:
[(“tshirt”, 4), (“pants”, -2)]
This mean number of tshirts will be increased by 4, and number of pants will be decreased by 2. The resulting inventory must look like:
{“tshirt”:33, “pants”:12, “shirt”:7, “shoes”:5}
If the item in a transaction does not exist in the inventory, then you must add it to the inventory. If the amount of an item drops to 0
in the inventory, then that item must be removed from the inventory (so the dictionary does not hold a key for that item anymore).
You can assume that transactions will never cause inventory amounts to drop below 0.
Your function must return the resulting inventory after applying all transactions in the list.
def processTransactions(inventory, transactions):
Firstly, welcome to the forums.
While we are primarily here to help people with their Free Code Camp progress, we are open to people on other paths, too. Some of what you are asking is pretty trivial in the Free Code Camp context, so you might find that if you’re not getting the instruction and material you need in your current studies, the FCC curriculum will really help you get started. At a modest guess I’d say investing a 4-5 hours working through the curriculum here will really pay off. You can find the curriculum at https://www.freecodecamp.org/learn.
With your current questions, we don’t have enough context to know what you already know or don’t know, so it is impossible to guide you without just telling you the answer (which we won’t do).
It is pretty typical on here for people to share a codepen / repl.it / jsfiddle example of what they have tried so that anyone helping has more of an idea of what help is actually helpful.
Please provide some example of what you’ve tried and I’m sure you’ll get more help.
Happy coding 