How can one alter the data of a chart in a docx document using Python?

To update the chart data in a docx document, you can use the python-docx library to operate.

First, to install the python-docx library, you can use the following command:

pip install python-docx

Next, you can use the following code example to modify the data in charts of a docx document.

from docx import Document
from docx.chart import CategoryChartData

# 打开docx文档
doc = Document('example.docx')

# 遍历文档中的图表
for chart in doc.inline_shapes:
    if chart.has_chart:
        # 获取图表对象
        chart_obj = chart.chart
        # 检查图表类型
        if chart_obj.chart_type == 'BarChart':  # 假设图表类型为柱形图
            # 修改图表数据
            chart_data = CategoryChartData()
            chart_data.categories = ['A', 'B', 'C']  # x轴数据
            chart_data.add_series('Series 1', (1, 2, 3))  # y轴数据
            chart_obj.replace_data(chart_data)

# 保存修改后的文档
doc.save('modified_example.docx')

In the above example, we opened a docx document named example.docx, traversed the charts within it, checked if the chart type is a bar chart. Next, we created a new chart data object CategoryChartData, and set the data for the x and y axes. Finally, we applied the modified data to the chart using the replace_data method. The modified document is saved as modified_example.docx.

Please note that this is just a basic example, and modifications may be necessary based on the specific charts and data structures used in actual applications. Specific chart types and data structures can be understood by consulting the documentation of the python-docx library.