How to create and fill a list of lists in a for loop

Question

I\'m trying to populate a list with a for loop. This is what I have so far:

newlist = []
for x in range(10):
    for y in range(10):
        newlist.append(y         


        

Answer 1

You can use this one line code with list comprehension to achieve the same result:

new_list = [[i for i in range(10)] for j in range(10)]