data_cube

from bokeh.io import show
from bokeh.models import (ColumnDataSource, DataCube, GroupingInfo,
                          StringFormatter, SumAggregator, TableColumn)

source = ColumnDataSource(data=dict(
    d0=['A', 'E', 'E', 'E', 'J', 'L', 'M'],
    d1=['B', 'D', 'D', 'H', 'K', 'L', 'N'],
    d2=['C', 'F', 'G', 'H', 'K', 'L', 'O'],
    px=[10, 20, 30, 40, 50, 60, 70],
))

# fmt: off
target = ColumnDataSource(data=dict(
    row_indices = [
        [0],
            [0],
                0,
        [1, 2, 3],
            [1, 2],
                1,
                2,
            [3],
                3,
        [4],
            [4],
                4,
        [5],
            [5],
                5,
        [6],
            [6],
                6,
    ],
    labels=[*'ABCEDFGHHJKKLLLMNO'],
))
# fmt: on

formatter = StringFormatter(font_style='bold')

columns = [
    TableColumn(field='d2', title='Name', width=80, sortable=False, formatter=formatter),
    TableColumn(field='px', title='Price', width=40, sortable=False),
]

grouping = [
    GroupingInfo(getter='d0', aggregators=[SumAggregator(field_='px')]),
    GroupingInfo(getter='d1', aggregators=[SumAggregator(field_='px')]),
]

cube = DataCube(source=source, columns=columns, grouping=grouping, target=target)

show(cube)