human
how to make a list of a list in as an attribute.
assistant
Here is a Python function to make a list of a list as an attribute

import collections

def make_list_of_list(list_of_list):
    """
    Make a list of a list in as an attribute.
    """
    return [list(x) for x in list_of_list]

# Enter the list
list_of_list = [[1, 2, 3], [4, 5, 6]]

# Calling the function
print((make_list_of_list(list_of_list)))

#Example Output
# [[1, 2, 3], [4, 5, 6]]

#Remember to inspect code for bugs.