python list in list

In Python, you can create a list of lists by nesting lists inside another list. Here's an example:

my_list = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]

In this example, `my_list` is a list that contains three sublists. Each sublist represents a row of elements. You can access individual elements using indexing. For instance, `my_list` will give you `[1, 2, 3]`, and `my_list` will give you `6`.