#  nutree
[](https://pypi.python.org/pypi/nutree/)
[](https://github.com/mar10/nutree/actions/workflows/tests.yml)
[](https://codecov.io/github/mar10/nutree)
[](https://github.com/mar10/nutree/blob/main/LICENSE.txt)
[](http://nutree.readthedocs.io/)
[](https://github.com/mar10/yabs)
[](https://stackoverflow.com/questions/tagged/nutree)
> _Nutree_ is a Python library for tree data structures with an intuitive,
> yet powerful, API.
**Nutree Facts**
Handle multiple references of single objects ('clones') <br>
Search by name pattern, id, or object reference <br>
Compare two trees and calculate patches <br>
Unobtrusive handling of arbitrary objects <br>
Save as DOT file and graphwiz diagram <br>
Nodes can be plain strings or objects <br>
(De)Serialize to (compressed) JSON <br>
Save as Mermaid flow diagram <br>
Different traversal methods <br>
Generate random trees <br>
Convert to RDF graph <br>
Fully type annotated <br>
Typed child nodes <br>
Pretty print <br>
Navigation <br>
Filtering <br>
**Example**
A simple tree, with text nodes
```py
from nutree import Tree, Node
tree = Tree("Store")
n = tree.add("Records")
n.add("Let It Be")
n.add("Get Yer Ya-Ya's Out!")
n = tree.add("Books")
n.add("The Little Prince")
tree.print()
```
```ascii
Tree<'Store'>
├─── 'Records'
│ ├─── 'Let It Be'
│ ╰─── "Get Yer Ya-Ya's Out!"
╰─── 'Books'
╰─── 'The Little Prince'
```
Tree nodes wrap the data and also expose methods for navigation, searching,
iteration, ...
```py
records_node = tree["Records"]
assert isinstance(records_node, Node)
assert records_node.name == "Records"
print(records_node.first_child())
```
```ascii
Node<'Let It Be', data_id=510268653885439170>
```
Nodes may be strings or arbitrary objects:
```py
alice = Person("Alice", age=23, guid="{123-456}")
tree.add(alice)
# Lookup nodes by object, data_id, name pattern, ...
assert isinstance(tree[alice].data, Person)
del tree[alice]
```
[Read the Docs](https://nutree.readthedocs.io/) for more.
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