Python Simple Solution
\nclass Solution:\n    def searchBST(self, root: TreeNode, val: int) -> TreeNode:\n        if not root:\n            return\n        if root.val==val:\n        
```\nclass Solution:\n    def searchBST(self, root: TreeNode, val: int) -> TreeNode:\n        if not root:\n            return\n        if root.val==val:\n            return root\n        if root.val<val:\n            return self.searchBST(root.right,val)\n        else:\n            return self.searchBST(root.left,val)\n```
['Python', 'Python3']