Convert a tree to tabular structure.

tree.py

from anytree import AnyNode, RenderTree, PreOrderIter
from pandas import DataFrame

root = AnyNode(id=1, name="Parent", children=[
    AnyNode(id=2, name="Child1", children=[
        AnyNode(id=4, name="GrandChild1"),
        AnyNode(id=5, name="GrandChild2"),
    ]),
    AnyNode(id=3, name="Child2", children=[
        AnyNode(id=6, name="GrandChild1"),
        AnyNode(id=7, name="GrandChild2"),
    ])
])
print(RenderTree(root))

rows = []
for node in PreOrderIter(root):
    rows.append((node.id, node.name, int(node.parent.id) if not node.is_root else 0))

dataFrame = DataFrame(rows, columns=("Id", "Name", "Parent"))
print(dataFrame)