Deep copy and shallow copy
import copy
= L [1,2,3,4, [ 'A', 'B', 'C']]
L2 = copy.deepcopy (L) # This is the only deep copy is
l2 = l [:] # shallow copy
l2 = l # shallow copy
l2 = l.copy () # shallow copy
The variable data types and immutable
Variable data types: list, dict
Non-variable data type: tuple, str, float, int