tree.py

import anytree
from anytree.dotexport import RenderTreeGraph

class Foo(anytree.Node):
    def __init__(self, name):
        super().__init__(name)

    def __gt__(self, other):
        other.parent = self
        return other

a = Foo("A")
b = Foo("B")
c = Foo("C")
d = Foo("D")
e = Foo("E")
f = Foo("F")

a > b > c
a > d > e
b > f

print(anytree.RenderTree(a, style=anytree.AsciiStyle()))

from anytree.dotexport import RenderTreeGraph
RenderTreeGraph(a).to_dotfile("tree.dot")


"""
$ python tree.py
Foo('/A')
|-- Foo('/A/B')
|   |-- Foo('/A/B/C')
|   +-- Foo('/A/B/F')
+-- Foo('/A/D')
    +-- Foo('/A/D/E')
"""