IndexError: list index out of range for CSV

I am currently working on an Inventory System, and have just developed code that allows me to add items to my .csv

My current csv file looks like this:

Here is my relevant code:

class CsvReader:
    def __init__(self): 
        self.result = []

    def make_dict_items(self):
        #fn = os.path.join('subdir', "Items2.csv")
        with open("Items2.csv") as fp:
            reader = csv.reader(fp)
            labels = next(reader, None)
            result = []
            for row in reader:
                row[0] = int(row[0])
                row[1] = float(row[1])
                row[2] = int(row[2])
                pairs = zip(labels, row)
                self.result.append(dict(pairs))

    def show_available(self):
        for item in self.result:
           print(item)
        
    def add_item(self):
       item_num = int(input("What is the items #?\n"))
       price = float(input("What is the items price?\n"))
       quant = int(input("What is the items quantity?\n"))
       name = input("What is the items name?\n")
       new_row = [item_num, price, quant, name]
       with open("Items2.csv", "a+") as  fp:
           reader = csv.reader(fp)
           fp.seek(0)
           labels = next(reader, None)
           writer = csv.writer(fp)
           new_record = dict(zip(labels, new_row))
           self.result.append(new_record)
           writer.writerow(new_record.values())

From what I understand, my add item is able to successfully input into my csv. For example, if I input 1, 2.99, 3, and Pumpkin into the inputs, and print(system.result), I can see the new dictionary in the list, and visually see it if I were to open the csv document.

What I dont understand is my current error I am getting. When I try to view my new item with my existing method that shows all items, I get an error:

row[0] = int(row[0])
IndexError: list index out of range

I understand this error has to do with trying to call elements in a list that don’t exist, but what seems to be the issue here. Why when I have the four items in my csv, the code works fine, but when I add a new row into the csv file, the code fails? Why does that specific line in make_dict_items not work when a 5th item is added, but works with the beginning four?

>Solution :

Your CSV has blank lines, which create empty row. Check for this and skip it.

            for row in reader:
                if row:
                    row[0] = int(row[0])
                    row[1] = float(row[1])
                    row[2] = int(row[2])
                    pairs = zip(labels, row)
                    self.result.append(dict(pairs))