尝试一下：

from random import shuffle


def randomise():
    listt = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o']
    shuffle(listt)
    return listt[:5], listt[5:10], listt[10:]

print(randomise())

这将进行打印（例如，由于它是随机的）：

This will print (for example, since it is random):

(['i', 'k', 'c', 'b', 'a'], ['d', 'j', 'h', 'n', 'f'], ['e', 'l', 'o', 'g', 'm'])