Quick Start

Create a Simplest Tree

You can create a simplest tree like this

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from treevalue import FastTreeValue

t = FastTreeValue({
    'a': 1,
    'b': 2.3,
    'x': {
        'c': 'str',
        'd': [1, 2, None],
        'e': b'bytes',
    }
})

if __name__ == '__main__':
    print(t)

A tree value object with the following structure will be created

../../_images/simple_demo.dat.svg

The output of the code above should be

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<FastTreeValue 0x7f9a7692df70>
├── a --> 1
├── b --> 2.3
└── x --> <FastTreeValue 0x7f9a76c90b20>
    ├── c --> 'str'
    ├── d --> [1, 2, None]
    └── e --> b'bytes'

Create a Slightly Complex Tree

You can easily create a tree value object which is slightly complex, based on FastTreeValue.

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from treevalue import FastTreeValue

t1 = FastTreeValue({'a': 's1', 'b': 2, 'x': {'c': 3, 'd': [1, 2]}})
t2 = FastTreeValue({'a': 'str11', 'b': 2, 'x': {'c': 33, 'd': t1.x.d}})
t3 = FastTreeValue({'t1': t1, 't2': t2, 'sum': t1 + t2})

if __name__ == '__main__':
    print('t1:')
    print(t1)

    print('t2:')
    print(t2)

    print('t3:')
    print(t3)

The result should be

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t1:
<FastTreeValue 0x7f5bdf4bfa30>
├── a --> 's1'
├── b --> 2
└── x --> <FastTreeValue 0x7f5bdf513ee0>
    ├── c --> 3
    └── d --> [1, 2]

t2:
<FastTreeValue 0x7f5bdf16dee0>
├── a --> 'str11'
├── b --> 2
└── x --> <FastTreeValue 0x7f5bdf16df70>
    ├── c --> 33
    └── d --> [1, 2]

t3:
<FastTreeValue 0x7f5bdf52b1c0>
├── sum --> <FastTreeValue 0x7f5bdf52b460>
│   ├── a --> 's1str11'
│   ├── b --> 4
│   └── x --> <FastTreeValue 0x7f5bdf16deb0>
│       ├── c --> 36
│       └── d --> [1, 2, 1, 2]
├── t1 --> <FastTreeValue 0x7f5bdf4bfa30>
│   ├── a --> 's1'
│   ├── b --> 2
│   └── x --> <FastTreeValue 0x7f5bdf513ee0>
│       ├── c --> 3
│       └── d --> [1, 2]
└── t2 --> <FastTreeValue 0x7f5bdf16dee0>
    ├── a --> 'str11'
    ├── b --> 2
    └── x --> <FastTreeValue 0x7f5bdf16df70>
        ├── c --> 33
        └── d --> [1, 2]

Three simple treevalue structures are created. Then save the code above to demo.py, and then input this shell command in your terminal.

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treevalue graph -t 'complex_demo.*' -c 'bgcolor=#ffffff00' -d list -o complex_demo.dat.svg

A graph named demo.dat.svg will be generated, like this.

../../_images/complex_demo.dat.svg

Now you are successfully started.