class Solution(object):
    def twoSum(nums, target):
        """
        :type nums: List[int]
        :type target: int
        :rtype: List[int]
        """
        s = []
        for i in range(len(nums)):
            s.append(target - nums[i])
        for i in range(len(nums)):
            x = target - nums[i]
            if (x in nums) and (nums.index(x) != i):
                if i > nums.index(x):
                    return [nums.index(x), i]
                return [i, nums.index(x)]
        return 'None'