如何使用python-pptx替换图表中的特定类别

from pptx import Presentation
from pptx.enum.chart import XL_CHART_TYPE

ppt = Presentation('your_ppt_file.pptx')
slides = ppt.slides

for slide in slides:
    for shape in slide.shapes:
        if shape.has_chart:
            chart = shape.chart
            # 进一步处理图表

if chart.chart_type in [XL_CHART_TYPE.COLUMN_CLUSTERED, XL_CHART_TYPE.LINE]:
    # 进一步处理柱状图或折线图

series = chart.series
categories = chart.categories

for i, category in enumerate(categories):
    if category == '特定类别':
        # 替换为新的类别值
        categories[i] = '新的类别值'

chart.replace_data(categories, series)

ppt.save('modified_ppt_file.pptx')