列表中随机项的索引

Question

我有以下列表：

cnames = [" green ", " blue ", " yellow ", " gray ", " pink ", " orange ", "purple ", " red ", "brown "]

如何获得6个随机且唯一的索引，表示0和之间的数字     该列表中的len(cnames)？

Answer 1

随机模块应该有帮助。

import random
random.sample(cnames, 6)   #random.sample returns unique list of random choice. 

random.sample(range(len(cnames)), 6)#to get random int representing a number between 0 and len(cnames)

<强>输出：

[' gray ', ' pink ', 'purple ', ' blue ', ' orange ', ' green ']