python - 生成集合中字符串及其子字符串的所有组合——python

Question

我想从一组字符串中获取字符串的所有组合。例如:

permut = set()
permut.add("D")
permut.add("C")

def getAllKombos(stuff):
    returnvalue = set()
    for L in range(0, len(stuff) + 1):
        for subset in itertools.combinations(stuff, L):
            for i in subset:
                x = x + (str(i))
                returnvalue.add(x)
            x = ""
    return returnvalue

print getAllKombos(permut)

我的输出是:

set(['C', 'D', 'CD'])

但我需要

set(['C', 'D', 'CD', 'DC'])

我不明白我做错了什么

Answer 1

import itertools

permut = set()
permut.add("D")
permut.add("C")

def getAllKombos(stuff):
    returnvalue = set()
    for L in range(0, len(stuff) + 1):
        for subset in itertools.permutations(stuff, L):
            for i in subset:
                x = x + (str(i))
                returnvalue.add(x)
            x = ""
    return returnvalue

print getAllKombos(permut)

这段代码现在可以工作了，您所要做的就是将组合切换为排列。