Programme chap2_type_1268_.py

# coding: latin-1
l     = [1,"a"]
ll    = [l,3]   # ll contient l
l [0] = ll      # l contient ll
print l         # affiche [[[...], 3], 'a']
print ll        # affiche [[[...], 'a'], 3]

import copy
z = copy.deepcopy (l)
print z         # affiche [[[...], 3], 'a']