Shuffle position of elements in a list [duplicate]

Question

Possible Duplicate:
Shuffling a list of objects in python

IF I have a list:

a = ["a", "b", "c", ..., "zzz"]

how can I randomly shuffle its elements in order to obtain a list:

b = ["c", "zh", ...]

without consuming a lot of the system's resources?

Answer 1

import random
b = list(a)
random.shuffle(b)