随机获取替换样品 [英] Get a random sample with replacement

问题描述

我有这个列表:

colors = ["R", "G", "B", "Y"]

我想从中得到4个随机字母，但包括重复字母.

and I want to get 4 random letters from it, but including repetition.

运行此命令只会给我4个唯一的字母，而不会给我任何重复的字母:

Running this will only give me 4 unique letters, but never any repeating letters:

print(random.sample(colors,4))

如何获得4种颜色的列表，并可能重复字母?

How do I get a list of 4 colors, with repeating letters possible?

推荐答案

在Python 3.6中，新的 random.choices() 函数将直接解决该问题:

In Python 3.6, the new random.choices() function will address the problem directly:

>>> from random import choices
>>> colors = ["R", "G", "B", "Y"]
>>> choices(colors, k=4)
['G', 'R', 'G', 'Y']

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