how to append each same element to list code example

Example 1: how to append to a list of lists in python

list_of_Lists = [[1,2,3],['hello','world'],[True,False,None]]
list_of_Lists.append([1,'hello',True])
ouput = [[1, 2, 3], ['hello', 'world'], [True, False, None], [1, 'hello', True]]

Example 2: add an element to list python

a=[8,5,6,1,7]
a.append(9)