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Python library for easy tree displaying

Project description

Tree printer
============

This library provides a tree printer class for easy tree displaying

## Installation
``` sh
$ pip install treeprinter
```

## Basic usage

### Printer instance
``` python
from treeprinter import TreePrinter

class Tree(object):
def __init__(self, tag, children=None):
self.children = children or []
self.tag = tag

tree = Tree("animal", [
Tree("cat"),
Tree("dog", [Tree("chihuahua"), Tree("dalmatian")]),
Tree("wolf")])

printer = TreePrinter('children', 'tag')
printer.pprint(tree)
```
```
animal
|
---------------------------
| | |
cat dog wolf
|
----------
| |
chihuahua dalmatian
```

### Printer decorator
You could also get the same result by decorating your class like so to implement the \_\_str\_\_ method
``` python
@TreePrinter('children', 'tag')
class Tree(object):
def __init__(self, tag, children=None):
self.children = children or []
self.tag = tag

print(tree)
```


## Extensions
You can extend the library by implementing the base displayer
(see printers/json_printer.py)

``` python
from treeprinter import JsonPrinter

printer = JsonPrinter()
json = {
"fruits": ["Apple", "Banana", "Pear"],
"presidents": {
"France": ["Sarkozy", "Hollande"],
"USA": ["Trump", "Obama"]
},
"star": "Sun"
}
printer.pprint(json)
```

```
{}
|
--------------------------------------
| | |
{presidents} [fruits] star
| | |
---------------- -------------- Sun
| | | | |
[France] [USA] Apple Banana Pear
| |
--------- ------
| | | |
Sarkozy Hollande Trump Obama
```

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