Python - Two_Sum

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def twoSum(self, nums, target):
        """
        :type nums: List[int]
        :type target: int
        :rtype: List[int]
        """
        for i in range(len(nums)):
            a = target-nums[i]
            if a in nums[i+1:]:
                return [i,nums[i+1:].index(a)+1+i]

def twoSum(self, nums, target):
        """
        :type nums: List[int]
        :type target: int
        :rtype: List[int]
        """
        result = []
        for i in range(len(nums)):
            a = target-nums[i]
            if a in result:
                return [result.index(a),i]
            else:
                result.append(nums[i])