Let's say you realize an product’s worth but don’t know its index during the list? How will you update the item’s value? In this case, you can use the .index() process as from the code underneath: Copied! In this instance, you make a deep copy of your respective matrix list. https://buy-ssd-solution-in-bonn11976.p2blogs.com/26357115/the-basic-principles-of-germany