def helper(root, p, q):
    if not root: return None
    if (root is p) or (root is q): 
        print('fd')
        return root
    left_val = helper(root.left,p,q)
    right_val = helper(root.right, p, q)
    if not left_val: return right_val
    if not right_val: return left_val
    return root

class Solution:
    def lowestCommonAncestor(self, root: TreeNode, p: TreeNode, q: TreeNode) -> TreeNode:
        return helper(root,p,q)`
```
idk why but when i compare two node object like in the below image root is p or root is q its always retunr false (i tried ==(value check) but that also returns false)