多个数组给定数找出多个数之和等于定数

mony_list_target.py

def getresult(a=None, b=None, c=None, target=None):
    for aitem in a:
        for bitem in b:
            if target - aitem - bitem in c:
                return a.index(aitem), bitem, target - aitem - bitem
    else:
        return None


a = [1, 2, 3]
b = [1, 2, 3]
c = [1, 2, 3]

print getresult(a, b, c, 9)