您可以使用第三方python包,称为anytree表单 https://pypi.org/project/anytree/

pip install anytree

代码.py

from anytree import Node, RenderTree

A = Node("A")
A1 =  Node ("A1", parent=A)
A11 = Node("A11", parent = A1)
A12 = Node("A12", parent = A1)
A121 = Node("A121", parent = A12)
A122 = Node("A122", parent = A12)
A2 = Node("A2", parent=A1)
B = Node("B")
C = Node("C")
C1 = Node("C1", parent=C)
C2 = Node("C2", parent=C)

print (A)
print(A122)

for pre, fill, node in RenderTree(A):
    print("%s%s" % (pre, node.name))

产量

============= RESTART: C:/Python36/MyTestScripts/anytree_test.py =============
Node('/A')
Node('/A/A1/A12/A122')
A
└── A1
    ├── A11
    ├── A12
    │   ├── A121
    │   └── A122
    └── A2
>>>