class Node:
   def __init__(self, my_data):
      self.right = None
      self.data = my_data
      self.left = None
class binary_tree_to_list:
   def __init__(self):
      self.root = None
      self.head = None
      self.tail = None
   def convert_tree_to_list(self, node_val):
      if node_val is None:
         return
      self.convert_tree_to_list(node_val.left)
      if (self.head == None) :
         self.head = self.tail = node_val
      else:
         self.tail.right = node_val
         node_val.left = self.tail
         self.tail = node_val
      self.convert_tree_to_list(node_val.right)
   def print_it(self):
      curr = self.head
      if (self.head == None):
         print("该列表为空")
         return
      print("该节点为：")
      while curr != None:
         print(curr.data)
         curr = curr.right
my_instance = binary_tree_to_list()
print("正在将元素添加到列表中")
my_instance.root = Node(10)
my_instance.root.left = Node(14)
my_instance.root.right = Node(17)
my_instance.root.left.left = Node(22)
my_instance.root.left.right = Node(29)
my_instance.root.right.left = Node(45)
my_instance.root.right.right = Node(80)
my_instance.convert_tree_to_list(my_instance.root)
my_instance.print_it()

正在将元素添加到列表中
该节点为：
22
14
29
10
45
17
80