class Node:

    def __init__(self, key=None, left=None, right=None):
        self.key = key
        self.left = left
        self.right = right


def Inorder(root):
    lst = []
    if root == None:
        return lst
    return Inorder(root.left) + [root.key] + Inorder(root.right)

3f32e8e3c0b568b550829fd0b80d9b45b3b7a1a3
<mask token>

class Node:
    <mask token>


<mask token>

class Node:

    def __init__(self, key=None, left=None, right=None):
        self.key = key
        self.left = left
        self.right = right


<mask token>

class Node:

    def __init__(self, key=None, left=None, right=None):
        self.key = key
        self.left = left
        self.right = right


def Inorder(root):
    lst = []
    if root == None:
        return lst
    return Inorder(root.left) + [root.key] + Inorder(root.right)
