python3 Solution
\n\nclass Solution:\n    def findDifference(self, nums1: List[int], nums2: List[int]) -> List[List[int]]:\n        n1=set(nums1)\n        n2=set(nums2)\n       
\n```\nclass Solution:\n    def findDifference(self, nums1: List[int], nums2: List[int]) -> List[List[int]]:\n        n1=set(nums1)\n        n2=set(nums2)\n        r1=list(set(x for x in nums1 if x not in n2))\n        r2=list(set(x for x in nums2 if x not in n1))\n        return [r1,r2]\n```
['Python', 'Python3']