Write a Python program to pack consecutive duplicates of a given list elements into sublists

from itertools import groupby
def pack_consecutive_duplicates(l_nums):
    return [list(group) for key, group in groupby(l_nums)]
n_list = [0, 0, 1, 2, 3, 4, 4, 5, 6, 6, 6, 7, 8, 9, 4, 4 ]
print("Original list:") 
print(n_list)
print("\nAfter packing consecutive duplicates of the said list elements into sublists:")
print(pack_consecutive_duplicates(n_list))