This is a copy. openpyxl Use guide for.

General content translation from official website https://openpyxl.readthedocs.io/en/stable/charts/bar.html#vertical-horizontal-and-stacked-bar-charts

This article will have some changes based on the official website. Code please refer to https://github.com/RustFisher/python-playground

Link in this article https://rustfisher.com/2019/11/14/Python/Python-openpyxl_charts_Bar_and_Column/

Cylindrical graph

The data will be plotted as a vertical, horizontal, or stacked column.

Be careful:

• The next settings affect different types of charts.
• Set categories to control whether the column chart is vertical or horizontal.
• When using stacked graphics, you need to set overlap to 100.
• If the column is horizontal, the x and y coordinates will be reversed.

2D chart

The sample code is as follows, and 4 charts are drawn according to the given data.

from openpyxl import Workbook
from openpyxl.chart import BarChart, Series, Reference


def bar_chart_demo():
    wb = Workbook(write_only=True)
    ws = wb.create_sheet()

    rows = [
        ('Number', 'Batch 1', 'Batch 2'),
        (2, 10, 30),
        (3, 40, 60),
        (4, 50, 70),
        (5, 20, 10),
        (6, 10, 40),
        (7, 50, 30),
    ]

    for row in rows:
        ws.append(row)

    chart1 = BarChart()
    chart1.type = "col"
    chart1.style = 10
    chart1.title = "Bar Chart"
    chart1.y_axis.title = 'Test number'
    chart1.x_axis.title = 'Sample length (mm)'

    data = Reference(ws, min_col=2, min_row=1, max_row=7, max_col=3)
    cats = Reference(ws, min_col=1, min_row=2, max_row=7)
    chart1.add_data(data, titles_from_data=True)
    chart1.set_categories(cats)
    chart1.shape = 4
    ws.add_chart(chart1, "A10")

    from copy import deepcopy

    chart2 = deepcopy(chart1)
    chart2.style = 11
    chart2.type = "bar"
    chart2.title = "Horizontal Bar Chart"

    ws.add_chart(chart2, "I10")

    chart3 = deepcopy(chart1)
    chart3.type = "col"
    chart3.style = 12
    chart3.grouping = "stacked"
    chart3.overlap = 100
    chart3.title = 'Stacked Chart'

    ws.add_chart(chart3, "A27")

    chart4 = deepcopy(chart1)
    chart4.type = "bar"
    chart4.style = 13
    chart4.grouping = "percentStacked"
    chart4.overlap = 100
    chart4.title = 'Percent Stacked Chart'

    ws.add_chart(chart4, "I27")

    wb.save("out/bar.xlsx")


if __name__ == '__main__':
    bar_chart_demo()

When we need to generate a chart, Excel will ask us to select the data range (source) first. Use Reference in your code to specify the range of data sources.

3D chart

Draw a 3D chart using BarChart3D.

def bar_3d():
    wb = Workbook()
    ws = wb.active

    rows = [
        (None, 2013, 2014),
        ("Apples", 5, 4),
        ("Oranges", 6, 2),
        ("Pears", 8, 3)
    ]

    for row in rows:
        ws.append(row)

    data = Reference(ws, min_col=2, min_row=1, max_col=3, max_row=4)
    titles = Reference(ws, min_col=1, min_row=2, max_row=4)
    chart = BarChart3D()
    chart.title = "3D Bar Chart"
    chart.add_data(data=data, titles_from_data=True)
    chart.set_categories(titles)

    ws.add_chart(chart, "E5")
    wb.save("out/bar3d.xlsx")

The created chart is opened with WPS and found to be 2D. Opening with Office Excel is 3D.