New to Python and trying to find out how to gather the quantity of one specific item in a nested list

I’m trying to figure out a code that will go
through all items of the list, and keep a count of how many
times the given item occurs, without the count funtion!

This is my code:

    shopping_cart= [
        ['Soap', 'Floss', 'Hand Sanitizer','Baby wipes'],
        ['Chickpeas', 'Blueberries', 'Granola'],
        ['Crayons','Construction paper','Printer ink']
        ]

    count = 0
    for [i] in shopping_cart:
        count+=len(shopping_cart)
        print (count)

>Solution :

I think the easiest way to do this sort of task is to just make a dictionary, add every item to it and then you can get the count for every item.

shopping_cart = [
   ['Soap', 'Floss', 'Hand Sanitizer','Baby wipes'],
   ['Chickpeas', 'Blueberries', 'Granola'],
   ['Crayons','Construction paper','Printer ink']
]


items = {}

for row in shopping_cart:
   for item in row:
       if item not in items:
           items[item] = 0
       items[item] += 1

print(items)