btree.py example but with box-wise colors?

[galenseilis]

This btree example is close to something I want:

"""https://www.graphviz.org/pdf/dotguide.pdf, Figure 13"""

import graphviz
from graphviz import nohtml

g = graphviz.Digraph('g', filename='btree.gv',
                     node_attr={'shape': 'record', 'height': '.1'})

g.node('node0', nohtml('<f0> |<f1> G|<f2>'))
g.node('node1', nohtml('<f0> |<f1> E|<f2>'))
g.node('node2', nohtml('<f0> |<f1> B|<f2>'))
g.node('node3', nohtml('<f0> |<f1> F|<f2>'))
g.node('node4', nohtml('<f0> |<f1> R|<f2>'))
g.node('node5', nohtml('<f0> |<f1> H|<f2>'))
g.node('node6', nohtml('<f0> |<f1> Y|<f2>'))
g.node('node7', nohtml('<f0> |<f1> A|<f2>'))
g.node('node8', nohtml('<f0> |<f1> C|<f2>'))

g.edge('node0:f2', 'node4:f1')
g.edge('node0:f0', 'node1:f1')
g.edge('node1:f0', 'node2:f1')
g.edge('node1:f2', 'node3:f1')
g.edge('node2:f2', 'node8:f1')
g.edge('node2:f0', 'node7:f1')
g.edge('node4:f2', 'node6:f1')
g.edge('node4:f0', 'node5:f1')

g.view()

Naturally this example doesn't have colour. I see I can colour a single node like this:

import graphviz
from graphviz import nohtml

g = graphviz.Digraph('g', filename='btree.gv',
                     node_attr={'shape': 'record', 'height': '.1'})

g.node('node0', nohtml('<f0> |<f1> G|<f2>'), style='filled', fillcolor='green')
g.node('node1', nohtml('<f0> |<f1> E|<f2>'))
g.node('node2', nohtml('<f0> |<f1> B|<f2>'))
g.node('node3', nohtml('<f0> |<f1> F|<f2>'))
g.node('node4', nohtml('<f0> |<f1> R|<f2>'))
g.node('node5', nohtml('<f0> |<f1> H|<f2>'))
g.node('node6', nohtml('<f0> |<f1> Y|<f2>'))
g.node('node7', nohtml('<f0> |<f1> A|<f2>'))
g.node('node8', nohtml('<f0> |<f1> C|<f2>'))

g.edge('node0:f2', 'node4:f1')
g.edge('node0:f0', 'node1:f1')
g.edge('node1:f0', 'node2:f1')
g.edge('node1:f2', 'node3:f1')
g.edge('node2:f2', 'node8:f1')
g.edge('node2:f0', 'node7:f1')
g.edge('node4:f2', 'node6:f1')
g.edge('node4:f0', 'node5:f1')

g.view()

Is it possible to specify different colours for the <f0>, <f1> and <f2> boxes within the node?

[xflr6]

Example: https://github.com/xflr6/graphviz/blob/master/examples/btree.py

Is it possible to specify different colours for the <f0>, <f1> and <f2> boxes within the node?

From https://graphviz.org/doc/info/shapes.html#record, I understand there is no way to assign style to fields in record-based shapes (as used in the example).

For coloring, you probably need to re-create the example using HTML-Like Labels (see https://graphviz.org/doc/info/shapes.html#html, color attribute), see also https://graphviz.org/doc/info/shapes.html#html-like-label-examples.