关于python 特殊的穷举三位数

Question

请问像这样的题目，数字由用户输入，怎么实现穷举三位数呢 请问详细的代码是什么呢
谢谢解答

Answer 1

import itertools as it 

s = map(int, input(">>>").split(","))
s = set(s)
if len(s) < 3:
    print("不足三位数！")
else:
    res = it.permutations(s, 3)    
    res = [''.join(map(str, i)) for i in res if i[0] != 0]
    res.sort()
    print(' '.join(map(str, res)))
    print(f"共{len(res)}个")