返回集合的所有子集
def count_set_children(a): result = [set()] for i in a: result += [j.copy() | set([i]) for j in result] return result if __name__ == ‘__main__‘: print(count_set_children(set([1,2,3])))
输出如下
原文：https://www.cnblogs.com/KingOfHuan/p/14709945.html