random模块提供了shuffle方法：

import random
>>> l = [88, 'redice', -100, 'China']
>>> random.shuffle(l)
>>> l
[-100, 'redice', 'China', 88]

以前不知道random.shuffle方法，我是这样实现的：

def list_random(l):
    """Make a list sort random
    """
    size = len(l)
    for i in range(len(l)):
        i1 = random.randint(0, size-1)
        i2 = random.randint(0, size-1)
        l[i1], l[i2] = l[i2], l[i1]
    return l

>>> l = [88, 'redice', -100, 'China']
>>> list_random(l)
['redice', 'China', -100, 88]