how to store 10**9 element in list python code example

Example 1: list of lists python

listOfLists = [[1,2,3],['hello','world'],[True,False,None]]

Example 2: list inside a list in python

# it appends a list into a list
list1 = [1,2,3,4,5]
list1.append([6,7])
# ouput = [1, 2, 3, 4, 5, [6, 7]]