# Python – Math operations from parsed API data

``````import requests

#Here is your new feature calculating the difference between two lowest prices for each item
def func(name, prices):
prices.sort(reverse = True) #sort prices of an item descending
if len(prices) == 1:
print (f"There is only one price for {name}")
else:
print (f"Name : {name}, Price difference between two lowest ones: {prices[-2] - prices[-1]}")

data = requests.get("https://api.hypixel.net/skyblock/auctions").json()
auctions = data["auctions"]
items = []
items1 = {} #Define items1 to group prices of an item in dictionay
for auction in auctions:
try:
if auction["bin"] and (str(auction["item_name"]).startswith("")) and auction["category"] == "weapon" and auction["tier"] == "EPIC":
items.append((auction["item_name"], auction["starting_bid"], auction["tier"]))
#Find and group all prices for an item
if auction["item_name"] in list(items1.keys()):
items1[auction["item_name"]].append(auction["starting_bid"])
else:
items1[auction["item_name"]] = [auction["starting_bid"]]
except KeyError:
continue
items.sort(key=lambda x: x[1])

#Apply feature for each item
for name,prices in items1.items():
func(name, prices)
``````

And here is the result:

``````There is only one price for Emerald Blade
There is only one price for Gentle Zombie Commander Whip
There is only one price for Reaper Falchion
Name : Treecapitator, Price difference between two lowest ones: 350000
Name : Heroic Ornate Zombie Sword, Price difference between two lowest ones: 0
There is only one price for Grand Sniper Bow
Name : Spicy Reaper Falchion, Price difference between two lowest ones: 1400000
There is only one price for Unreal Machine Gun Bow ✪✪✪✪✪
There is only one price for Spicy Leaping Sword
There is only one price for Hurricane Bow
There is only one price for Spicy Scorpion Foil
Name : Magma Bow, Price difference between two lowest ones: 535001
There is only one price for Heroic Ornate Zombie Sword ✪✪✪✪✪
There is only one price for Spicy Silk-Edge Sword
``````