Python多叉树的构造及取出节点数据(treelib)的方法

> import treelib
> from treelib import Tree, Node

> class Nodex(object):     def __init__(self, num):       self.num = num

> tree1 = Tree()
> tree1.create_node('Root', 'root', data = Nodex('3'));   tree1.create_node('Child1', 'child1', parent = 'root', data =Nodex('4'));   tree1.create_node('Child2', 'child2', parent = 'root', data =Nodex('5'));   tree1.create_node('Child3', 'child3', parent = 'root', data =Nodex('6'));\

> tree1.show()
Root
├── Child1
├── Child2
└── Child3

> tree1.show(data_property = 'num')
3
├── 4
├── 5
└── 6

> tree1.nodes
{'root': Node(tag=Root, identifier=root, data=<__main__.Nodex object at 0x000002265C6A9550>), 'child1': Node(tag=Child1, identifier=child1, data=<__main__.Nodex object at 0x000002265C6A9E10>)}

> tree1.nodes['child1'].data.num
'4'