Can you explain the code and when random.randint is added to the numslist[i] in the last line, is it going to add that number to numslit in the second line?

1 2 3 import random numsList = [] 5 6 for i in range(0,4): numsList.append()) for j in range(0,4): number=random.randint(0, 100) numsList[i].append(random.randint(0,100) 7 8 9 10 11 12 13 14 15 for value in numsList: output="" for num in value: output+=str(num) print (output)