如何从Python集中选取2个随机项目? [英] How do I pick 2 random items from a Python set?

问题描述

我当前有一个n大小的Python集，其中n> =0.是否有快速的1或2行Python解决方案来做到这一点?例如，该集合将如下所示:

I currently have a Python set of n size where n >= 0. Is there a quick 1 or 2 lines Python solution to do it? For example, the set will look like:

fruits = set(['apple', 'orange', 'watermelon', 'grape'])

目标是从上面选择2个随机项目，并且上面的集合可能包含0、1个或更多项目.我可以想到的唯一方法是将集合转换为列表(可变)，从那里我可以访问集合长度内的2个随机唯一索引.

The goal is to pick 2 random items from the above and it's possible that the above set can contain 0, 1 or more items. The only way I can think of doing the above is to convert the set to a list(mutable) from where I can access 2 random unique index within the length of the set.

推荐答案

使用random模块: http://docs.python.org/library/random.html

import random
random.sample(set([1, 2, 3, 4, 5, 6]), 2)

这将采样两个值而不会替换(因此，两个值是不同的).

This samples the two values without replacement (so the two values are different).

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