CliTree

clitree is a library to draw tree structures like the CLI utility tree does.

Install it with:

pip install clitree

Example usage:

>>> from clitree import tree
>>> 
>>> data = {
...     "name": "root",
...     "children": [
...         {"name": "docs", "children": [
...             {"name": "api.md", "children": []},
...             {"name": "guide.md", "children": []}
...         ]},
...         {"name": "src", "children": [
...             {"name": "main.py", "children": []},
...             {"name": "utils", "children": [
...                 {"name": "helpers.py", "children": []},
...                 {"name": "config.py", "children": []}
...             ]}
...         ]},
...         {"name": "tests", "children": []}
...     ]
... }
>>> 
>>> print(tree(data))
root
├── docs
│   ├── api.md
│   └── guide.md
├── src
│   ├── main.py
│   └── utils
│       ├── helpers.py
│       └── config.py
└── tests

Parameters

• name: How to extract the name of a node. Can be:
  • A string key (uses node.get(name) or getattr(node, name))
  • A callable that returns a string
• children: How to obtain the children of a node. Can be:
  • A string key (uses node.get(children) or getattr(node, children))
  • A callable that returns an iterable of nodes (including generators)
  • Returns None or empty iterable for leaf nodes

Node Structure

When using string keys for name and children, nodes are typically:

• Dictionaries with a get method, or
• Objects with attributes accessible via getattr

However, since name and children can be callables, nodes can be of any type, as the callables are responsible for extracting the required information.

Requirements:

• The name must resolve to a string value
• Children must be iterable or None

Error Handling

• ValueError: Raised when a node's name resolves to None
• TypeError: Raised when children are not iterable